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112 results on '"Tommaso Vinci"'

1. Structural evolution of liquid silicates under conditions in Super-Earth interiors

Author

Guillaume Morard, Jean-Alexis Hernandez, Clara Pege, Charlotte Nagy, Lélia Libon, Antoine Lacquement, Dimosthenis Sokaras, Hae Ja Lee, Eric Galtier, Philip Heimann, Eric Cunningham, Siegfried H. Glenzer, Tommaso Vinci, Clemens Prescher, Silvia Boccato, Julien Chantel, Sébastien Merkel, Yanyao Zhang, Hong Yang, Xuehui Wei, Silvia Pandolfi, Wendy L. Mao, Arianna E. Gleason, Sang Heon Shim, Roberto Alonso-Mori, and Alessandra Ravasio

Subjects
Science
Abstract

Abstract Molten silicates at depth are crucial for planetary evolution, yet their local structure and physical properties under extreme conditions remain elusive due to experimental challenges. In this study, we utilize in situ X-ray diffraction (XRD) at the Matter in Extreme Conditions (MEC) end-station of the Linear Coherent Linac Source (LCLS) at SLAC National Accelerator Laboratory to investigate liquid silicates. Using an ultrabright X-ray source and a high-power optical laser, we probed the local atomic arrangement of shock-compressed liquid (Mg,Fe)SiO3 with varying Fe content, at pressures from 81(9) to 385(40) GPa. We compared these findings to ab initio molecular dynamics simulations under similar conditions. Results indicate continuous densification of the O-O and Mg-Si networks beyond Earth’s interior pressure range, potentially altering melt properties at extreme conditions. This could have significant implications for early planetary evolution, leading to notable differences in differentiation processes between smaller rocky planets, such as Earth and Venus, and super-Earths, which are exoplanets with masses nearly three times that of Earth.

Published
2024
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2. Release dynamics of nanodiamonds created by laser-driven shock-compression of polyethylene terephthalate

Author

Ben Heuser, Armin Bergermann, Michael G. Stevenson, Divyanshu Ranjan, Zhiyu He, Julian Lütgert, Samuel Schumacher, Mandy Bethkenhagen, Adrien Descamps, Eric Galtier, Arianna E. Gleason, Dimitri Khaghani, Griffin D. Glenn, Eric F. Cunningham, Siegfried H. Glenzer, Nicholas J. Hartley, Jean-Alexis Hernandez, Oliver S. Humphries, Kento Katagiri, Hae Ja Lee, Emma E. McBride, Kohei Miyanishi, Bob Nagler, Benjamin Ofori-Okai, Norimasa Ozaki, Silvia Pandolfi, Chongbing Qu, Philipp Thomas May, Ronald Redmer, Christopher Schoenwaelder, Keiichi Sueda, Toshinori Yabuuchi, Makina Yabashi, Bratislav Lukic, Alexander Rack, Lisa M. V. Zinta, Tommaso Vinci, Alessandra Benuzzi-Mounaix, Alessandra Ravasio, and Dominik Kraus

Subjects
Medicine, Science
Abstract

Abstract Laser-driven dynamic compression experiments of plastic materials have found surprisingly fast formation of nanodiamonds (ND) via X-ray probing. This mechanism is relevant for planetary models, but could also open efficient synthesis routes for tailored NDs. We investigate the release mechanics of compressed NDs by molecular dynamics simulation of the isotropic expansion of finite size diamond from different P-T states. Analysing the structural integrity along different release paths via molecular dynamic simulations, we found substantial disintegration rates upon shock release, increasing with the on-Hugnoiot shock temperature. We also find that recrystallization can occur after the expansion and hence during the release, depending on subsequent cooling mechanisms. Our study suggests higher ND recovery rates from off-Hugoniot states, e.g., via double-shocks, due to faster cooling. Laser-driven shock compression experiments of polyethylene terephthalate (PET) samples with in situ X-ray probing at the simulated conditions found diamond signal that persists up to 11 ns after breakout. In the diffraction pattern, we observed peak shifts, which we attribute to thermal expansion of the NDs and thus a total release of pressure, which indicates the stability of the released NDs.

Published
2024
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3. Characterization of the stability and dynamics of a laser-produced plasma expanding across a strong magnetic field

Author

Weipeng Yao, Julien Capitaine, Benjamin Khiar, Tommaso Vinci, Konstantin Burdonov, Jérôme Béard, Julien Fuchs, and Andrea Ciardi

Subjects
Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Magnetized laser-produced plasmas are central to many studies in laboratory astrophysics, in inertial confinement fusion, and in industrial applications. Here, we present the results of large-scale three-dimensional magnetohydrodynamic simulations of the dynamics of a laser-produced plasma expanding into a transverse magnetic field with a strength of tens of teslas. The simulations show the plasma being confined by the strong magnetic field into a slender slab structured by the magnetized Rayleigh–Taylor instability that develops at the plasma–vacuum interface. We find that when the initial velocity of the plume is perturbed, the slab can develop kink-like motions that disrupt its propagation.

Published
2022
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6. Diamond formation kinetics in shock-compressed C─H─O samples recorded by small-angle x-ray scattering and x-ray diffraction

Author

Zhiyu He, Melanie Rödel, Julian Lütgert, Armin Bergermann, Mandy Bethkenhagen, Deniza Chekrygina, Thomas E. Cowan, Adrien Descamps, Martin French, Eric Galtier, Arianna E. Gleason, Griffin D. Glenn, Siegfried H. Glenzer, Yuichi Inubushi, Nicholas J. Hartley, Jean-Alexis Hernandez, Benjamin Heuser, Oliver S. Humphries, Nobuki Kamimura, Kento Katagiri, Dimitri Khaghani, Hae Ja Lee, Emma E. McBride, Kohei Miyanishi, Bob Nagler, Benjamin Ofori-Okai, Norimasa Ozaki, Silvia Pandolfi, Chongbing Qu, Divyanshu Ranjan, Ronald Redmer, Christopher Schoenwaelder, Anja K. Schuster, Michael G. Stevenson, Keiichi Sueda, Tadashi Togashi, Tommaso Vinci, Katja Voigt, Jan Vorberger, Makina Yabashi, Toshinori Yabuuchi, Lisa M. V. Zinta, Alessandra Ravasio, and Dominik Kraus

Subjects
Multidisciplinary
Abstract

Extreme conditions inside ice giants such as Uranus and Neptune can result in peculiar chemistry and structural transitions, e.g., the precipitation of diamonds or superionic water, as so far experimentally observed only for pure C─H and H 2 O systems, respectively. Here, we investigate a stoichiometric mixture of C and H 2 O by shock-compressing polyethylene terephthalate (PET) plastics and performing in situ x-ray probing. We observe diamond formation at pressures between 72 ± 7 and 125 ± 13 GPa at temperatures ranging from ~3500 to ~6000 K. Combining x-ray diffraction and small-angle x-ray scattering, we access the kinetics of this exotic reaction. The observed demixing of C and H 2 O suggests that diamond precipitation inside the ice giants is enhanced by oxygen, which can lead to isolated water and thus the formation of superionic structures relevant to the planets’ magnetic fields. Moreover, our measurements indicate a way of producing nanodiamonds by simple laser-driven shock compression of cheap PET plastics.

Published
2022

8. Micron-scale phenomena observed in a turbulent laser-produced plasma

Author

Nobuki Kamimura, Tatiana Pikuz, Gianluca Gregori, T. Yabuuchi, Norimasa Ozaki, S. A. Pikuz, Tommaso Vinci, K. Miyanishi, Tadashi Togashi, Kento Katagiri, P. Mabey, Yuhei Umeda, V. Bouffetier, Bruno Albertazzi, Keiichi Sueda, G. Rigon, Olivier Poujade, F. Barbato, Makina Yabashi, R. Kodama, Alexis Casner, M. Koenig, Emeric Falize, Y. Inubushi, S. S. Makarov, M. J.-E. Manuel, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Institute for Open and Transdisciplinary Research Initiative

Subjects
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], Science, General Physics and Astronomy, Imaging techniques, 7. Clean energy, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Spectral line, 010305 fluids & plasmas, law.invention, Physics::Fluid Dynamics, Fluid dynamics, law, Physics::Plasma Physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Inertial confinement fusion, Physics, Multidisciplinary, Fluid dynamics, Imaging techniques, Laser-produced plasmas, Scattering, Turbulence, General Chemistry, Plasma, Laser-produced plasmas, Laser, Computational physics, Physics::Space Physics, Physics::Accelerator Physics, Beam (structure)
Abstract

Turbulence is ubiquitous in the universe and in fluid dynamics. It influences a wide range of high energy density systems, from inertial confinement fusion to astrophysical-object evolution. Understanding this phenomenon is crucial, however, due to limitations in experimental and numerical methods in plasma systems, a complete description of the turbulent spectrum is still lacking. Here, we present the measurement of a turbulent spectrum down to micron scale in a laser-plasma experiment. We use an experimental platform, which couples a high power optical laser, an x-ray free-electron laser and a lithium fluoride crystal, to study the dynamics of a plasma flow with micrometric resolution (~1μm) over a large field of view (>1 mm2). After the evolution of a Rayleigh–Taylor unstable system, we obtain spectra, which are overall consistent with existing turbulent theory, but present unexpected features. This work paves the way towards a better understanding of numerous systems, as it allows the direct comparison of experimental results, theory and numerical simulations. Turbulence effects explored use macroscale systems in general. Here the authors generate a turbulent plasma using laser irradiation of a solid target and study the dynamics of the plasma flow at the micron-scale by using scattering of an XFEL beam.

Published
2021

9. Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures

Author

J Lütgert, Hae Ja Lee, S. Brown, Peihao Sun, Tilo Döppner, Dominik Kraus, Thomas E. Cowan, Emma McBride, S. H. Glenzer, Maximilian Schörner, Luke Fletcher, Irene Prencipe, Philip Heimann, A. Laso Garcia, A. K. Schuster, A. Pelka, N. J. Hartley, Roger Falcone, Jan Vorberger, Tommaso Vinci, Alison Saunders, Melanie Rödel, Alessandra Benuzzi-Mounaix, Eric Cunningham, Dirk O. Gericke, M. Schölmerich, Eric Galtier, K. Voigt, Alessandra Ravasio, Technische Universität Dresden = Dresden University of Technology (TU Dresden), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), SLAC National Accelerator Laboratory (SLAC), Stanford University, Lawrence Livermore National Laboratory (LLNL), Lawrence Berkeley National Laboratory [Berkeley] (LBNL), University of Warwick [Coventry], University of California [Berkeley], University of California, European XFEL Gmbh, University of California [Berkeley] (UC Berkeley), and University of California (UC)

Subjects
Diffraction, Equation of state, Materials science, Science, Ab initio, Thermodynamics, Bioengineering, 01 natural sciences, Article, law.invention, Molecular dynamics, chemistry.chemical_compound, Condensed Matter::Materials Science, law, 0103 physical sciences, Polyethylene terephthalate, Planetary science, 010306 general physics, 010303 astronomy & astrophysics, Pyrometer, Theory and computation, Laboratory astrophysics, [PHYS]Physics [physics], Multidisciplinary, Laser-produced plasmas, Shock (mechanics), chemistry, Medicine, Density functional theory
Abstract

We present structure and equation of state (EOS) measurements of biaxially orientated polyethylene terephthalate (PET, $$({\hbox {C}}_{10} {\hbox {H}}_8 {\hbox {O}}_4)_n$$ ( C 10 H 8 O 4 ) n , also called mylar) shock-compressed to ($$155 \pm 20$$ 155 ± 20 ) GPa and ($$6000 \pm 1000$$ 6000 ± 1000 ) K using in situ X-ray diffraction, Doppler velocimetry, and optical pyrometry. Comparing to density functional theory molecular dynamics (DFT-MD) simulations, we find a highly correlated liquid at conditions differing from predictions by some equations of state tables, which underlines the influence of complex chemical interactions in this regime. EOS calculations from ab initio DFT-MD simulations and shock Hugoniot measurements of density, pressure and temperature confirm the discrepancy to these tables and present an experimentally benchmarked correction to the description of PET as an exemplary material to represent the mixture of light elements at planetary interior conditions.

Published
2021

10. Characterization of the stability and dynamics of a laser-produced plasma expanding across strong magnetic field

Author

Weipeng Yao, Julien Capitaine, Benjamin Khiar, Tommaso Vinci, Konstantin Burdonov, Jérôme Béard, Julien Fuchs, Andrea Ciardi, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), LERMA Cergy (LERMA), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), DPHY, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, A.M.Obukhov Institute of Atmospheric Physics (IAP), Russian Academy of Sciences [Moscow] (RAS), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), ANR-10-EQPX-0029,EQUIP@MESO,Equipement d'excellence de calcul intensif de Mesocentres coordonnés - Tremplin vers le calcul petaflopique et l'exascale(2010), and European Project: 787539,GENESIS - 10.3030/787539

Subjects
[PHYS]Physics [physics], Plasma Physics (physics.plasm-ph), Physics::Fluid Dynamics, Nuclear and High Energy Physics, Nuclear Energy and Engineering, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics::Plasma Physics, Physics::Space Physics, FOS: Physical sciences, Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Physics - Plasma Physics
Abstract

International audience; Magnetized laser-produced plasmas are central to many new studies in laboratory astrophysics, inertial confinement fusion, and in industrial applications. Here we present the results of large-scale, three-dimensional magneto-hydrodynamic simulations of the dynamics of a laser-produced plasma expanding into a transverse magnetic field with strength of tens of Tesla. The simulations show the plasma being confined by the strong magnetic field into a slender slab structured by the magnetized Rayleigh-Taylor instability that develops at the plasma-vacuum interface. We find that by perturbing the initial velocity of the plume the slab can develops kink-like motion which disrupt its propagation, as observed in recent experiments.

Published
2021

11. Numerical study of Langmuir wave coalescence in laser-plasma interaction

Author

François Amiranoff, J.-R. Marquès, L. Lancia, Pascal Loiseau, C. Briand, Mickael Grech, Tommaso Vinci, Sylvie Depierreux, Caterina Riconda, F. Perez, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and perez, frederic

Subjects
Physics, Interplanetary medium, FOS: Physical sciences, Plasma, Condensed Matter Physics, Laser, Polarization (waves), Plasma oscillation, 01 natural sciences, Instability, Spectral line, Physics - Plasma Physics, 010305 fluids & plasmas, law.invention, Computational physics, Plasma Physics (physics.plasm-ph), law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, Cathode ray, 010306 general physics, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; Type-III-burst radio signals can be mimicked in the laboratory via laser-plasma interaction. Instead of an electron beam generating Langmuir waves (LW) in the interplanetary medium, the LWs are created by a laser interacting with a millimeter-sized plasma through the stimulated Raman instability. In both cases, the LWs feed the Langmuir decay instability which scatters them in several directions. The resulting LWs may couple to form electromagnetic emission at twice the plasma frequency, which has been detected in the interplanetary medium, and recently in a laboratory laser experiment [Marquès et al. Phys. Rev. Lett. 124, 135001 (2020)]. This article presents the first numerical analysis of this laser configuration using particle-in-cell simulations, providing details on the wave spectra that are too difficult to measure in experiments. The role of some parameters is addressed, with a focus on laser intensity, in order to illustrate the behavior of the electromagnetic emission's angular distribution and polarization.

Published
2021

12. Exploring the deep interior of ice giants with shock-compression experiments and ab initio simulations: The case of metallic ammonia

Author

Alessandra Ravasio, Frédéric Datchi, Sandra Ninet, Frederic Lefevre, Martin French, Mandy Bethkenhagen, Tommaso Vinci, M. Guarguaglini, Jean-Alexis Hernandez, Alessandra Benuzzi-Mounaix, and Ronald Redmer

Subjects
Metal, Ammonia, chemistry.chemical_compound, Materials science, chemistry, visual_art, Ab initio, visual_art.visual_art_medium, Compression (physics), Molecular physics, Ice giant, Shock (mechanics)
Abstract

Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior structure are insufficiently understood and models rely imperatively on data for equation of state and transport properties [1,2]. Despite its great significance, the experimentally accessed region of the ammonia phase diagram today is still very limited in pressure and temperature [3, 4].We investigate the equation of state, the optical properties and the electrical conductivity of warm dense ammonia by combining laser-driven shock experiments and state-of-the-art density functional theory molecular dynamics (DFT-MD) simulations [5]. The equation of state is probed along the Hugoniot of liquid NH3 up to 350 GPa and 40000 K and in very good agreement with earlier DFT-MD results [6]. Our temperature measurements show a subtle slope change at 7000 K and 90 GPa, which coincides with the gradual transition from a liquid dominated by molecules to a plasma state in our new ab initio simulations. The reflectivity data furnish the first experimental evidence of electronic conduction in high pressure ammonia and are in excellent agreement with the reflectivity computed from atomistic simulations. Corresponding electrical conductivity values are found up to one order of magnitude higher than in water in the 100 GPa regime, with possible implications on the generation of magnetic dynamos in large icy planets’ interiors. [1] Scheibe, Nettelmann, Redmer, Astronomy & Astrophysics 632, A70 (2019).[2] Vazan & Helled, Astronomy & Astrophysics 633, A50 (2020).[3] Nellis, Hamilton, Holmes, Radousky, Ree, Mitchell, Nicol, Science 240, 779 (1988).[4] Radousky, Mitchell, Nellis, Journal of Chemical Physics 93, 8235 (1990).[5] Ravasio, Bethkenhagen, Hernandez, Benuzzi-Mounaix, Datchi, French, Guarguaglini, Lefevre, Ninet, Redmer, Vinci, Physical Review Letters 126, 025003 (2021).[6] Bethkenhagen, French, Redmer, Journal of Chemical Physics 138, 234504 (2013).

Published
2021

13. Electrical conductivity of warm dense silica from double-shock experiments

Author

Alessandra Benuzzi-Mounaix, Erik Brambrink, J.-A. Hernandez, Tommaso Vinci, M. Guarguaglini, Alessandra Ravasio, François Soubiran, R. Bolis, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), University of Oslo (UiO), ANR POMPEI (Grant No. ANR-16-CE31-0008), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), and ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016)

Subjects
Equation of state, Materials science, Electronic properties and materials, Science, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, General Biochemistry, Genetics and Molecular Biology, Article, Physics::Geophysics, Electrical resistivity and conductivity, 0103 physical sciences, 010306 general physics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Range (particle radiation), Fusion, Multidisciplinary, General Chemistry, Mechanics, Laser-produced plasmas, Shock (mechanics), Planetary science, 13. Climate action, [SDU]Sciences of the Universe [physics], Physics::Space Physics, Terrestrial planet, Astrophysics::Earth and Planetary Astrophysics, Dynamo
Abstract

Understanding materials behaviour under extreme thermodynamic conditions is fundamental in many branches of science, including High-Energy-Density physics, fusion research, material and planetary science. Silica (SiO2) is of primary importance as a key component of rocky planets’ mantles. Dynamic compression is the most promising approach to explore molten silicates under extreme conditions. Although most experimental studies are restricted to the Hugoniot curve, a wider range of conditions must be reached to distill temperature and pressure effects. Here we present direct measurements of equation of state and two-colour reflectivity of double-shocked α-quartz on a large ensemble of thermodynamic conditions, which were until now unexplored. Combining experimental reflectivity data with numerical simulations we determine the electrical conductivity. The latter is almost constant with pressure while highly dependent on temperature, which is consistent with simulations results. Based on our findings, we conclude that dynamo processes are likely in Super-Earths’ mantles., Warm dense silica is a key component in rocky planets’ mantles, but reproducing the relevant conditions in experiments is challenging. Here the authors use a double-shock technique to achieve such conditions and measure the reflectivity in situ, providing insight into the conductivity and its possible impact on dynamo processes in super-Earths’ mantles.

Published
2021

14. X-ray radiography based on the phase-contrast imaging with using LiF detector

Author

Keiichi Sueda, Nobuki Kamimura, Tatiana Pikuz, Makina Yabashi, E. Falize, P. Mabey, Yuhei Umeda, Bruno Albertazzi, R. Kodama, V. Bouffetier, Norimasa Ozaki, S. S. Makarov, G. Rigon, A. P. Chernyaev, Olivier Poujade, Gianluca Gregori, Kento Katagiri, M. J.-E. Manuel, Alexis Casner, T. Yabuuchi, Tommaso Vinci, M. Koenig, Y. Inubushi, Alexey Buzmakov, S. A. Pikuz, Tadashi Togashi, K. Miyanishi, Department of Nanophotonics and Metamaterials, ITMO University, Russian Academy of Sciences [Moscow] (RAS), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
History, Materials science, Physics::Instrumentation and Detectors, Radiography, Physics::Optics, 02 engineering and technology, 01 natural sciences, 010305 fluids & plasmas, Education, Crystal, chemistry.chemical_compound, Optics, 0103 physical sciences, [PHYS]Physics [physics], X ray radiography, business.industry, Visibility (geometry), Detector, Phase-contrast imaging, Lithium fluoride, 021001 nanoscience & nanotechnology, Computer Science Applications, Metrology, chemistry, 0210 nano-technology, business
Abstract

An x-ray radiography technique based upon phase contrast imaging using a lithium fluoride detector has been demonstrated for goals of high energy density physics experiments. Based on the simulation of propagation an x-ray free-electron laser beam through a test-object, the visibility of phase-contrast image depending on an object-detector distance was investigated. Additionally, the metrological capabilities of a lithium fluoride crystal as a detector were demonstrated.

Published
2021

15. Metallization of Shock-Compressed Liquid Ammonia

Author

M. Guarguaglini, Mandy Bethkenhagen, Ronald Redmer, F. Lefevre, Alessandra Ravasio, Tommaso Vinci, Martin French, Frédéric Datchi, S. Ninet, J.-A. Hernandez, Alessandra Benuzzi-Mounaix, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Universität Rostock, University of Oslo (UiO), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ANR POMPEI (Grant No. ANR-16-CE31-0008)ANR SUPER-ICES (Grant No. ANR-15-CE30-008-01), ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), Chemical Physics (physics.chem-ph), Equation of state, Materials science, Condensed matter physics, Shock (fluid dynamics), [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Compressed fluid, Uranus, General Physics and Astronomy, FOS: Physical sciences, Thermal conduction, 01 natural sciences, Physics - Plasma Physics, 3. Good health, Plasma Physics (physics.plasm-ph), [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics - Chemical Physics, 0103 physical sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, Order of magnitude, Ice giant, Phase diagram, Astrophysics - Earth and Planetary Astrophysics
Abstract

Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior structure are insufficiently understood and models rely imperatively on data for equation of state and transport properties. Despite its great significance, the experimentally accessed region of the ammonia phase diagram today is still very limited in pressure and temperature. Here we push the probed regime to unprecedented conditions, up to $\sim$350 GPa and $\sim$40000 K. Along the Hugoniot, the temperature measured as a function of pressure shows a subtle change in slope at $\sim$7000 K and $\sim$90 GPa, in agreement with ab initio simulations we have performed. This feature coincides with the gradual transition from a molecular liquid to a plasma state. Additionally, we performed reflectivity measurements, providing the first experimental evidence of electronic conduction in high-pressure ammonia. Shock reflectance continuously rises with pressure above 50 GPa and reaches saturation values above 120 GPa. Corresponding electrical conductivity values are up to 1 order of magnitude higher than in water in the 100 GPa regime, with possible significant contributions of the predicted ammonia-rich layers to the generation of magnetic dynamos in ice giant interiors., Please visit publisher's website for supplementary information

Published
2021

16. Exploring the deep interior of ice giants with shock-compressionexperiments and ab initio simulations:The case of metallic ammonia

Author

Frederic Lefevre, Alessandra Ravasio, Mandy Bethkenhagen, Sandra Ninet, Alessandra Benuzzi-Mounaix, Tommaso Vinci, Frédéric Datchi, M. Guarguaglini, Ronald Redmer, Jean-Alexis Hernandez, and Martin French

Subjects
Metal, Ammonia, chemistry.chemical_compound, Materials science, chemistry, visual_art, Ab initio, visual_art.visual_art_medium, Molecular physics, Ice giant, Shock (mechanics)
Published
2021

17. Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field

Author

Mirela Cerchez, Drew Higginson, E. D. Filippov, T. Gangolf, S. A. Pikuz, I. Yu. Skobelev, B. Khiar, G. Revet, Tommaso Vinci, B. Olmi, Salvatore Orlando, J. Béard, O. Willi, Rosaria Bonito, M. V. Starodubtsev, Costanza Argiroffi, M. Safronova, M. Ouillé, S. N. Ryazantsev, Julien Fuchs, Andrea Ciardi, Andrea Mignone, Sophia Chen, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Institute of Applied Physics (IAP, Nizhny Novgorod), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Flash Center for Computational Science (FCCS), University of Chicago, Joint Institute for High Temperatures of the RAS (JIHT), Russian Academy of Sciences [Moscow] (RAS), Dipartimento di Fisica e Chimica [Palermo] (DiFC), Università degli studi di Palermo - University of Palermo, INAF - Osservatorio Astronomico di Palermo (OAPa), Istituto Nazionale di Astrofisica (INAF), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut für Laser und Plasmaphysik, Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, ELI NP Dept, Reactorului Str 30, Magurele 077125, Romania, Lawrence Livermore National Laboratory (LLNL), Dipartimento di Fisica Generale, Università di Torino, INAF - Osservatorio Astrofisico di Arcetri (OAA), The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia], Revet G., Khiar B., Filippov E., Argiroffi C., Beard J., Bonito R., Cerchez M., Chen S.N., Gangolf T., Higginson D.P., Mignone A., Olmi B., Ouille M., Ryazantsev S.N., Skobelev I.Y., Safronova M.I., Starodubtsev M., Vinci T., Willi O., Pikuz S., Orlando S., Ciardi A., and Fuchs J.

Subjects
Science, Astrophysics::High Energy Astrophysical Phenomena, Nozzle, outflows, magnetohydrodynamics(MHD), shockwaves, astrophysical jets, General Physics and Astronomy, FOS: Physical sciences, Astrophysics, 01 natural sciences, Article, General Biochemistry, Genetics and Molecular Biology, Collimated light, Settore FIS/05 - Astronomia E Astrofisica, Ambient field, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Magnetic pressure, 010306 general physics, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, Laboratory astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Jet (fluid), Multidisciplinary, Laser-produced plasmas, General Chemistry, Physics - Plasma Physics, Magnetic field, Plasma Physics (physics.plasm-ph), Astrophysics - Solar and Stellar Astrophysics, Physics::Accelerator Physics, Outflow, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

The shaping of astrophysical outflows into bright, dense, and collimated jets due to magnetic pressure is here investigated using laboratory experiments. Here we look at the impact on jet collimation of a misalignment between the outflow, as it stems from the source, and the magnetic field. For small misalignments, a magnetic nozzle forms and redirects the outflow in a collimated jet. For growing misalignments, this nozzle becomes increasingly asymmetric, disrupting jet formation. Our results thus suggest outflow/magnetic field misalignment to be a plausible key process regulating jet collimation in a variety of objects from our Sun’s outflows to extragalatic jets. Furthermore, they provide a possible interpretation for the observed structuring of astrophysical jets. Jet modulation could be interpreted as the signature of changes over time in the outflow/ambient field angle, and the change in the direction of the jet could be the signature of changes in the direction of the ambient field., Mass outflow is a common process in astrophysical objects. Here the authors investigate in which conditions an astrophysically-scaled laser-produced plasma flow can be collimated and evolves in the presence of a misaligned external magnetic field.

Published
2021

18. Effect of plasma hydrodynamics on laser-produced bremsstrahlung MeV photon dose

Author

F. Hannachi, T. Bonnet, Tommaso Vinci, Christian Courtois, M. Tarisien, F. Gobet, Jean-Raphael Marques, M. Versteegen, A. Compant La Fontaine, Laboratoire pour l'utilisation des lasers intenses (LULI), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, [PHYS]Physics [physics], Photon, Bremsstrahlung, Electron, Plasma, Radiation, Condensed Matter Physics, Laser, 01 natural sciences, 010305 fluids & plasmas, law.invention, Pulse (physics), Physics::Plasma Physics, law, 0103 physical sciences, Atomic physics, 010306 general physics, FOIL method, ComputingMilieux_MISCELLANEOUS
Abstract

We detail a laser plasma experiment aimed at enhancing laser to MeV electron energy coupling and then the x-ray dose produced when a short pulse laser propagates through a long preformed plasma. This study can be of interest not only for radiography of high areal mass objects requiring large doses but also for radiation safety of large scale laser facilities such as LMJ or NIF able to produce long preformed plasmas through which a short pulse laser can propagate. A low-intensity (∼1014 W/cm2) ns beam explodes a thin foil deposited on a high-Z solid target to generate an underdense plasma. An intense (>1018 W/cm2) and short (

Published
2020

19. White-line evolution in shocked solid Ta evidenced by synchrotron x-ray absorption spectroscopy

Author

Laurent Videau, Richard Gaal, Richard Briggs, P. Loubeyre, A. Benuzzi-Mounaix, Charles Pépin, R. Torchio, Tommaso Vinci, Sakura Pascarelli, V. Recoules, J. Bouchet, Olivier Mathon, E. Lescoute, Arnaud Sollier, F. Occelli, Laboratoire pour l'utilisation des lasers intenses (LULI), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
X-ray absorption spectroscopy, Materials science, Absorption spectroscopy, tantalum, xas, Astrophysics::High Energy Astrophysical Phenomena, Tantalum, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Omega, Synchrotron, law.invention, chemistry, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Phase (matter), code, 0103 physical sciences, Density functional theory, 010306 general physics, 0210 nano-technology, Absorption (electromagnetic radiation)
Abstract

Time-resolved x-ray absorption experiments have been performed on shocked tantalum. Using a single 100 ps synchrotron x-ray pulse, nanosecond-lived equilibrium states of shocked solid Ta have been measured by ${L}_{3}$-edge absorption spectroscopy. The energy shift and intensity change of the white line were measured up to 130 GPa and 2000 K. The experimental results are discussed in light of density functional theory calculations and FEFF simulations. The absence of occurrence of the hcp-$\ensuremath{\omega}$ phase is suggested from the analysis of the shape of the white line.

Published
2020

20. Ultrafast X-ray diffraction measurements of shock-compressed iron and iron alloys

Author

Fabio Pietrucci, Gabriele Mogni, Kohei Miyanishi, Michel Koenig, Toshinori Yabuuchi, Makina Yabashi, Marion Harmand, Ryosuke Kodama, Andrew Krygier, Norimasa Ozaki, Bruno Albertazzi, Takeshi Matsuoka, Tommaso Vinci, Guillaume Fiquet, Daniele Antonangeli, Emma McBride, Yuichi Inubushi, Marco Saitta, Tadashi Togashi, and Yuhei Umeda

Subjects
Materials science, X-ray crystallography, Iron alloys, Analytical chemistry, Ultrashort pulse, Shock (mechanics)
Abstract

The extreme pressures achievable with dynamic compression holds great promise for studying planetary interiors. Phase stability of Fe-Si alloys, which are complex to address, is particularly relevant to understanding telluric planetary cores due to the widely varying properties produced by small changes in Si concentration. Here we report the study of phase stability of pure iron and Fe-Si alloys by x-ray diffraction measurements carried out on shocked samples using an x-ray free electron laser (XFEL). Our setup combined with the brilliance of the XFEL allows us to observe the rapid onset of high-pressure solid-solid phase transformation in Fe and Fe-Si8.5wt%; we observe no such evidence in Fe-Si16wt% up to 110 GPa on the nanosecond timescale. Density Functional Theory calculations provide the conceptual framework to rationalize these observations. Taken together our experiments and calculations support recent dynamic compression measurements and shed light on conflicting static compression results. Our work highlights the need to properly consider the differing intrinsic timescales of the static and dynamic experiments when comparing results, and the complementarity of the techniques in assessing phase diagram and transition mechanisms.

Published
2020

21. In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures

Author

A. E. Gleason, Eric Galtier, Bob Nagler, R. Bolis, Alessandra Benuzzi-Mounaix, Wendy L. Mao, Siegfried Glenzer, Alessandra Ravasio, A. K. Schuster, Guillaume Fiquet, Gaston Garbarino, Hae Ja Lee, J.-A. Hernandez, Guillaume Morard, M. Guarguaglini, Mohamed Mezouar, Tommaso Vinci, Denis Andrault, Byeongkwan Ko, M. A. Baron, Dimosthenis Sokaras, Roberto Alonso-Mori, Sang Heon Shim, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Arizona State University [Tempe] (ASU), Stanford University [Stanford], SLAC National Accelerator Laboratory (SLAC), Laboratoire Magmas et Volcans (LMV), Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016), Institut des Sciences de la Terre (ISTerre), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), University of Oslo (UiO), Stanford University, Department of Geological Sciences [Stanford] (GS), Stanford EARTH, Stanford University-Stanford University, Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), ANR POMPEI (Grant No. ANR-16-CE31-0008), European Project: 670787,H2020,ERC-2014-ADG,PLANETDIVE(2016), and Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC)

Subjects
Diffraction, Multidisciplinary, Materials science, 010504 meteorology & atmospheric sciences, [PHYS.PHYS]Physics [physics]/Physics [physics], [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Thermodynamics, Atmospheric temperature range, 01 natural sciences, Silicate, Diamond anvil cell, Mantle (geology), Amorphous solid, chemistry.chemical_compound, chemistry, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, X-ray crystallography, Core–mantle boundary, Physical Sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 010306 general physics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract

International audience; Properties of liquid silicates under high pressure and high temperature conditions are critical for modeling the dynamics and solidification mechanisms of the magma ocean in the early Earth, as well as for constraining entrainment of melts in the mantle and in the present-day core-mantle boundary. Here, we present in situ structural measurements by X-ray diffraction of selected amorphous silicates compressed statically in diamond anvil cells (up to 157 GPa at room temperature) or dynamically by laser-generated shock compression (up to 130 GPa and 6000 K along the MgSiO3 glass Hugoniot). The X-ray diffraction patterns of silicate glasses and liquids reveal similar characteristics over a wide pressure and temperature range. Beyond the increase in Si coordination observed at 20 GPa, we find no evidence for major structural changes occurring in the silicate melts studied up to pressures and temperatures exceeding Earth's core mantle boundary conditions. This result is supported by molecular dynamics calculations. Our findings reinforce the widely-used assumption that the silicate glasses studies are appropriate structural analogs for understanding the atomic arrangement of silicate liquids at these high pressures.

Published
2020

22. Laser-Plasma Interaction Experiment for Solar Burst Studies

Author

François Amiranoff, Mickael Grech, F. Perez, Jean-Raphael Marques, Sylvie Depierreux, Caterina Riconda, L. Lancia, Tommaso Vinci, C. Briand, Andrea Sgattoni, Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
General Physics and Astronomy, Interplanetary medium, FOS: Physical sciences, Electron, Plasma oscillation, 01 natural sciences, 7. Clean energy, Electromagnetic radiation, law.invention, law, Physics::Plasma Physics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, Plasma, Laser, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Physics - Plasma Physics, Plasma Physics (physics.plasm-ph), Excited state, Physics::Space Physics, Atomic physics, Interplanetary spaceflight, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

A new experimental platform based on laser-plasma interaction is proposed to explore the fundamental processes of wave coupling at the origin of interplanetary radio emissions. It is applied to the study of electromagnetic (EM) emission at twice the plasma frequency ($2\omega_p$) observed during solar bursts and thought to result from the coalescence of two Langmuir waves (LWs). In the interplanetary medium, the first LW is excited by electron beams, while the second is generated by electrostatic decay of Langmuir waves. In the present experiment, instead of an electron beam, an energetic laser propagating through a plasma excites the primary LW, with characteristics close to those at near-Earth orbit. The EM radiation at $2\omega_p$ is observed at different angles. Its intensity, spectral evolution and polarization confirm the LW-coalescence scenario., Comment: Accepted for publication in Phys. Rev. Lett

Published
2020

23. X-ray absorption near edge spectroscopy study of warm dense MgO

Author

Stephane Mazevet, N. J. Hartley, R. Bolis, Fabien Dorchies, Alessandra Ravasio, V. Recoules, F. Remus, Erik Brambrink, M. Guarguaglini, Tommaso Vinci, François Guyot, Norimasa Ozaki, J. Bouchet, N. Jourdain, R. Musella, Alessandra Benuzzi-Mounaix, J.-A. Hernandez, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Photon Pioneers Center, Osaka University, Osaka University [Osaka], Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Graduate School of Engineering Science [Osaka], Osaka University, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Department of Material and Life Science, Graduate School of Engineering, Osaka University, Institut de minéralogie et de physique des milieux condensés (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Graduate School of Engineering Science, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Saclay-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Shock wave, Metallization process, Band gap, Ionic bonding, 02 engineering and technology, 01 natural sciences, Molecular physics, Spectral line, Shock waves, Condensed Matter::Materials Science, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, Spectroscopy, Absorption (electromagnetic radiation), ComputingMilieux_MISCELLANEOUS, Phase diagram, Physics, [PHYS]Physics [physics], High-density liquid, Lasers, X-ray absorption spectroscopy, 021001 nanoscience & nanotechnology, Condensed Matter Physics, XANES, Laser plasma interactions, Phase transitions, 0210 nano-technology
Abstract

International audience; We report time-resolved X-ray Absorption Near Edge Spectroscopy (XANES) measurements of warm dense MgO. We used a high power nanosecond pulse to drive a strong uniform shock wave into an MgO sample, and a picosecond pulse to generate a broadband X-ray source near the Mg K-edge. We used this setup to obtain XANES spectra across a large area of the phase diagram, with densities up to 6.8 g/cc and temperatures up to 30 000 K, conditions at which no prior investigations of electronic and ionic structure exist. Our XANES results, together with quantum molecular dynamic simulations, demonstrate that the sample metallizes due to the bandgap closure as it melts, after which it shows typical behavior for a disordered ionic liquid. Published under license by AIP Publishing. https://doi.

Published
2019

24. Characterizing equation of state and optical properties of dynamically pre-compressed materials

Author

M. Guarguaglini, Tommaso Vinci, Jean-Alexis Hernandez, Alessandra Ravasio, R. Bolis, Alessandra Benuzzi-Mounaix, Erik Brambrink, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016)

Subjects
Equation of state, Materials science, Thermodynamic state, FOS: Physical sciences, Warm dense matter, Condensed Matter Physics, Compression (physics), 01 natural sciences, 7. Clean energy, Measure (mathematics), Physics - Plasma Physics, 010305 fluids & plasmas, Computational physics, law.invention, Shock (mechanics), Plasma Physics (physics.plasm-ph), [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology, 13. Climate action, law, Planet, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Pyrometer
Abstract

Characterising materials at pressures of several megabar and temperatures of a few thousand Kelvin is critical for the understanding of the Warm Dense Matter regime and to improve planetary models as these conditions are typical of planets' interiors. Today, laser-driven shock compression is the only technique to achieve multimegabar pressures, but the associated temperatures are too high to be representative of planetary states. Double-shock compression represents an alternative to explore lower temperatures. Here we present a method to create well-controlled double-shocked states and measure their thermodynamic state and optical reflectivity using standard optical diagnostics (Doppler velocimetry and optical pyrometry) in a laser-driven shock experiment. This method, which does not require the support of hydrodynamical simulations, is based on the application of generalised Rankine-Hugoniot relations together with a self impedance mismatch technique. A validation experiment has been performed at the LULI2000 facility (\'Ecole Polytechnique, France) on a sample of $\alpha$-quartz. A temperature $60 \%$ lower than along the principal Hugoniot has been obtained at 7.5 Mbar., Comment: 10 pages, 7 figures

Published
2019

25. Laser-driven shock compression of 'synthetic planetary mixtures' of water, ethanol, and ammonia

Author

Ryosuke Kodama, Alessandra Ravasio, J.-A. Hernandez, Norimasa Ozaki, Kohei Miyanishi, M. Koenig, Alessandra Benuzzi-Mounaix, Martin French, Takayoshi Sano, Erik Brambrink, Yasunori Fujimoto, R. Bolis, Yuhei Umeda, F. Lefevre, Mandy Bethkenhagen, Takuo Okuchi, P. Barroso, Tommaso Vinci, Ronald Redmer, M. Guarguaglini, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Polytechnique de Paris (IP Paris), Okayama University, Observatoire de Paris, Université Paris sciences et lettres (PSL), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Universität Rostock, Institut für Physik [Rostock], Osaka University [Osaka], ANR POMPEI (Grant No. ANR-16-CE31-0008), and ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016)

Subjects
0301 basic medicine, Materials science, Thermodynamic state, Chemical physics, Science, Article, 03 medical and health sciences, 0302 clinical medicine, Neptune, Planet, Giant planets, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Adiabatic process, Multidisciplinary, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Exoplanets, Uranus, Laser-produced plasmas, Computational physics, Shock (mechanics), Boundary layer, 030104 developmental biology, 13. Climate action, Medicine, Astrophysics::Earth and Planetary Astrophysics, 030217 neurology & neurosurgery, Ice giant
Abstract

Water, methane, and ammonia are commonly considered to be the key components of the interiors of Uranus and Neptune. Modelling the planets’ internal structure, evolution, and dynamo heavily relies on the properties of the complex mixtures with uncertain exact composition in their deep interiors. Therefore, characterising icy mixtures with varying composition at planetary conditions of several hundred gigapascal and a few thousand Kelvin is crucial to improve our understanding of the ice giants. In this work, pure water, a water-ethanol mixture, and a water-ethanol-ammonia “synthetic planetary mixture” (SPM) have been compressed through laser-driven decaying shocks along their principal Hugoniot curves up to 270, 280, and 260 GPa, respectively. Measured temperatures spanned from 4000 to 25000 K, just above the coldest predicted adiabatic Uranus and Neptune profiles (3000–4000 K) but more similar to those predicted by more recent models including a thermal boundary layer (7000–14000 K). The experiments were performed at the GEKKO XII and LULI2000 laser facilities using standard optical diagnostics (Doppler velocimetry and optical pyrometry) to measure the thermodynamic state and the shock-front reflectivity at two different wavelengths. The results show that water and the mixtures undergo a similar compression path under single shock loading in agreement with Density Functional Theory Molecular Dynamics (DFT-MD) calculations using the Linear Mixing Approximation (LMA). On the contrary, their shock-front reflectivities behave differently by what concerns both the onset pressures and the saturation values, with possible impact on planetary dynamos.

Published
2019

27. X-ray powder diffraction in reflection geometry on multi-beam kJ-type laser facilities

Author

A. Berlioux, Alessandra Ravasio, Alessandra Benuzzi-Mounaix, L. Duthoit, Tommaso Vinci, Stephanie Brygoo, Laurent Videau, Didier Loison, A. Denoeud, J.-A. Hernandez, M. Guarguaglini, Arnaud Sollier, Erik Brambrink, F. Lefevre, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), University of Oslo (UiO), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Agence Nationale de la Recherche, ANR: ANR-16-CE31-0008Norges Forskningsråd: 223272, ANR-16-CE31-0008,POMPEI,Propriétés de Mélanges de H2ONH3CH4 d'interet pour les intérieurs planétaires et les exoplanètes.(2016), Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Diffraction, Atoms, Materials science, Thermodynamic conditions, X-ray detector, Geometry, 01 natural sciences, Plasma diagnostics, 010305 fluids & plasmas, law.invention, Optics, law, 0103 physical sciences, Instrumentation, Ultrafast lasers, Pyrometer, [PHYS]Physics [physics], 010302 applied physics, Pressure and temperature, X ray powder diffraction, business.industry, X ray lasers, Reflection geometry, X ray detectors, Structural measurements, Velocimetry, Laser, Beam plasma interactions, X-ray crystallography, Polycrystalline iron, Laser produced plasmas, business, Diffraction signals, Laser-plasma interactions, Powder diffraction, Laser beams, Transmission geometries
Abstract

International audience; An ultrafast x-ray powder diffraction setup for laser-driven dynamic compression has been developed at the LULI2000 laser facility. X-ray diffraction is performed in reflection geometry from a quasi-monochromatic laser-generated plasma x-ray source. In comparison to a transmission geometry setup, this configuration allows us to probe only a small portion of the compressed sample, as well as to shield the detectors against the x-rays generated by the laser-plasma interaction on the front side of the target. Thus, this new platform facilitates probing of spatially and temporarily uniform thermodynamic conditions and enables us to study samples of a large range of atomic numbers, thicknesses, and compression dynamics. As a proof-of-concept, we report direct structural measurements of the bcc-hcp transition both in shock and ramp-compressed polycrystalline iron with diffraction signals recorded between 2θ ∼30° and ∼150°. In parallel, the pressure and temperature history of probed samples is measured by rear-side visible diagnostics (velocimetry and pyrometry).

Published
2021

28. Decaying shock studies of phase transitions in MgO-SiO2 systems: Implications for the super-Earths' interiors

Author

Toshimori Sekine, Guillaume Morard, Alessandra Benuzzi-Mounaix, Yoichi Sakawa, F. Remus, Norimasa Ozaki, J. Bouchet, Tommaso Vinci, M. Guarguaglini, M. Koenig, E. Bambrink, R. Kodama, R. Bolis, François Guyot, Alessandra Ravasio, K. Miyanishi, R. Musella, and Tomokazu Sano

Subjects
Phase transition, Materials science, 010504 meteorology & atmospheric sciences, Shock (fluid dynamics), Analytical chemistry, Forsterite, engineering.material, Laser, 01 natural sciences, law.invention, Geophysics, law, Phase (matter), 0103 physical sciences, engineering, Enstatite, General Earth and Planetary Sciences, Periclase, 010306 general physics, 0105 earth and related environmental sciences, Phase diagram
Abstract

We report an experimental study of the phase diagrams of periclase (MgO), enstatite (MgSiO3) and forsterite (Mg2SiO4) at high pressures. We investigated with laser driven decaying shocks the pressure/temperature curves of MgO, MgSiO3 and Mg2SiO4 between 0.2-1.2 TPa, 0.12-0.5 TPa and 0.2-0.85 TPa respectively. A melting signature has been observed in MgO at 0.47 TPa and 9860 K, while no phase changes were observed neither in MgSiO3 nor in Mg2SiO4. An increasing of reflectivity of MgO, MgSiO3 and Mg2SiO4 liquids have been detected at 0.55 TPa -12 760 K, 0.15 TPa 7540 K, 0.2 TPa 5800 K, respectively. In contrast to SiO2, melting and metallization of these compounds do not coincide implying the presence of poor electrically conducting liquids close to the melting lines. This has important implications for the generation of dynamos in Super-earths mantles.

Published
2016

29. Adaptive SIMD optimizations in particle-in-cell codes with fine-grain particle sorting

Author

F. Massimo, Asma Farjallah, M. Lobet, Julien Derouillat, Imene Zemzemi, Arnaud Beck, Tommaso Vinci, Mickael Grech, Frédéric Perez, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Maison de la Simulation (MDLS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de Recherche en Informatique et en Automatique (Inria)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Université Paris-Sud - Paris 11 (UP11)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Fine grain, Adaptive algorithm, Computer science, Sorting, Scalar (mathematics), FOS: Physical sciences, General Physics and Astronomy, Parallel computing, Particle-in-cell (PIC), Computational Physics (physics.comp-ph), Simd vectorization, 01 natural sciences, 010305 fluids & plasmas, Plasma physics, Hardware and Architecture, 0103 physical sciences, Particle sorting, SIMD, Particle-in-cell, 010306 general physics, Physics - Computational Physics, SIMD vectorization
Abstract

International audience; Particle-In-Cell (PIC) codes are broadly applied to the kinetic simulation of plasmas, from laser–matter interaction to astrophysics. Their heavy simulation cost can be mitigated by using the Single Instruction Multiple Data (SIMD) capability,or vectorization, now available on most architectures. This article details and discusses the vectorization strategy developed in the code Smilei which takes advantage from an efficient, systematic, cell-based sorting of the particles. The PIC operators on particles (projection, push, deposition) have been optimized to benefit from large SIMD vectors on both recent and older architectures. The efficiency of these vectorized operations increases with the number of particles per cell (PPC), typically speeding up three-dimensional simulations by a factor 2 with 256 PPC. Although this implementation shows acceleration from as few as 8 PPC, it can be slower than the scalar version in domains containing fewer PPC as usually observed in vectorization attempts. This issue is overcome with an adaptive algorithm which switches locally between scalar (for few PPC) and vectorized operators (otherwise). The newly implemented methods are benchmarked on three different, large-scale simulations considering configurations frequently studied with PIC codes.

Published
2018

30. From quantum to classical modeling of radiation reaction: a focus on the radiation spectrum

Author

F. Amiranoff, Julien Derouillat, F. Niel, M. Lobet, Frederic Perez, Caterina Riconda, Mickael Grech, Tommaso Vinci, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Maison de la Simulation (MDLS), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de Recherche en Informatique et en Automatique (Inria)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Electromagnetic field, Photon, Electromagnetic spectrum, FOS: Physical sciences, Electron, 7. Clean energy, 01 natural sciences, 010305 fluids & plasmas, law.invention, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, Quantum, ComputingMilieux_MISCELLANEOUS, Physics, [PHYS.PHYS]Physics [physics]/Physics [physics], Plasma, Condensed Matter Physics, Laser, Physics - Plasma Physics, [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], Computational physics, Plasma Physics (physics.plasm-ph), Nuclear Energy and Engineering, Radiation reaction
Abstract

Soon available multi petawatt ultra-high-intensity (UHI) lasers will allow us to probe high-amplitude electromagnetic fields interacting with either ultra-relativistic electron beams or hot plasmas in the so-called moderately quantum regime. The correct modelling of the back-reaction of high-energy photon emission on the radiating electron dynamics, a.k.a. radiation reaction, in this regime is a key point for UHI physics. This will lead to both validation of theoretical predictions on the photon spectrum emitted during the laser-particle interaction and to the generation of high energy photon sources. In this paper we analyse in detail such emission using recently developed models to account for radiation reaction. We show how the predictions on the spectrum can be linked to a reduced description of the electron distribution function in terms of the first energy moments. The temporal evolution of the spectrum is discussed, as well as the parameters for which quantum effects induce hardening of the spectrum.

Published
2018

31. Production and Diagnostics of Dense Matter

Author

Erik Brambrink, N. Amadou, Alessandra Benuzzi-Mounaix, Tommaso Vinci, M. Harmand, Michel Koenig, Matthias Geissel, and A. Pelka

Subjects
Physics, Phase transition, Warm dense matter, Condensed Matter Physics, Laser, Compression (physics), law.invention, Computational physics, law, Planet, Relaxation (physics), Statistical physics, Material properties, Dense matter
Abstract

High energy lasers are a unique tool to create high pressure states above 10 Mbar at ns time scales, which allow to study material properties under these extreme conditions. These conditions are, for example, comparable with planetary cores, where material properties play an important role for the properties and evolution of a planet. The rapid compression allows also to study dynamic effects of phase transitions as compression times are comparable to relaxation times. We will present recent results of laser compression of iron reaching conditions of so called “super-Earth” cores. A description of the compression schemes as well as present and future diagnostics is presented. (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Published
2015

32. Dynamic fracture of tantalum under extreme tensile stress

Author

Haruhiko Ohashi, Takahisa Koyama, Tommaso Vinci, Michel Koenig, Takeshi Matsuoka, Satoshi Matsuyama, Kenjiro Takahashi, A. Faenov, Toshinori Yabuuchi, Guillaume Morard, Tatiana Pikuz, Kensuke Tono, Yuhei Umeda, Yasuhisa Sano, Norimasa Ozaki, Yoshinori Tange, Yusuke Seto, Makina Yabashi, Hirokatsu Yumoto, Bruno Albertazzi, Toshimori Sekine, T. Ishikawa, Osami Sakata, Takuo Okuchi, D. K. Ilnitsky, Tadashi Togashi, N. J. Hartley, Yuichi Inubushi, K. P. Migdal, Hideaki Habara, Tomoko Sato, Nail Inogamov, Vasily Zhakhovsky, Marion Harmand, Narangoo Purevjav, Ryosuke Kodama, Tetsuo Katayama, Kazuto Yamauchi, Andrew Krygier, Kazuo Tanaka, Emma McBride, Graduate School of Engineering Science [Toyonaka, Osaka], Osaka University, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Photon Pioneers Center, Osaka University, Osaka University [Osaka], Dukhov Research Institute of Automatics, Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Japan Synchrotron Radiation Research Institute [Hyogo] (JASRI), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), SLAC National Accelerator Laboratory (SLAC), Stanford University, European XFEL GmbH (XFEL), European XFEL GmbH, Okayama University, Institute for Academic Initiatives, Osaka University, National Institute for Materials Science (NIMS), Hiroshima University, Kobe University, Institute of laser Engineering, ANR-12-PDOC-0011,IronFEL,Le fer et ses alliages sous conditions extrèmes et sondés par diagnostiques X sur les installations FEL et lasers intenses(2012), and Graduate School of Engineering Science [Osaka]

Subjects
Shock wave, Diffraction, Dynamic fracture, Laser, 02 engineering and technology, 01 natural sciences, Atomic units, law.invention, law, 0103 physical sciences, Spallation, 010306 general physics, Research Articles, Applied Physics, [PHYS]Physics [physics], Multidisciplinary, XFEL, SciAdv r-articles, Strain rate, 021001 nanoscience & nanotechnology, Computational physics, spallation, Atomic scale, Femtosecond, 0210 nano-technology, Ultrashort pulse, Research Article
Abstract

The dynamic fracture of tantalum is observed at the atomic scale using an x-ray monitoring technique at the SACLA XFEL facility., The understanding of fracture phenomena of a material at extremely high strain rates is a key issue for a wide variety of scientific research ranging from applied science and technological developments to fundamental science such as laser-matter interaction and geology. Despite its interest, its study relies on a fine multiscale description, in between the atomic scale and macroscopic processes, so far only achievable by large-scale atomic simulations. Direct ultrafast real-time monitoring of dynamic fracture (spallation) at the atomic lattice scale with picosecond time resolution was beyond the reach of experimental techniques. We show that the coupling between a high-power optical laser pump pulse and a femtosecond x-ray probe pulse generated by an x-ray free electron laser allows detection of the lattice dynamics in a tantalum foil at an ultrahigh strain rate of ε. ~2 × 108 to 3.5 × 108 s−1. A maximal density drop of 8 to 10%, associated with the onset of spallation at a spall strength of ~17 GPa, was directly measured using x-ray diffraction. The experimental results of density evolution agree well with large-scale atomistic simulations of shock wave propagation and fracture of the sample. Our experimental technique opens a new pathway to the investigation of ultrahigh strain-rate phenomena in materials at the atomic scale, including high-speed crack dynamics and stress-induced solid-solid phase transitions.

Published
2017

33. Detailed characterization of laser-produced astrophysically-relevant jets formed via a poloidal magnetic nozzle

Author

A. A. Soloviev, K. Naughton, Benjamin Khiar, Drew Higginson, R. Riquier, E. D. Filippov, Oliver Portugall, Caterina Riconda, G. Revet, S. A. Pikuz, Tommaso Vinci, S. N. Ryazantsev, I. Yu. Skobelev, D. Khaghani, M. Blecher, H. Pépin, Oswald Willi, Marco Borghesi, J. Béard, K. F. Burdonov, M. V. Starodubtsev, Julien Fuchs, S. N. Chen, Andrea Ciardi, Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire National des Champs Magnétiques Pulsés (LNCMP), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Queen's University [Belfast] (QUB), Énergie Matériaux Télécommunications - INRS (EMT-INRS), Institut National de la Recherche Scientifique [Québec] (INRS)-Université du Québec à Montréal = University of Québec in Montréal (UQAM), Joint Institute for High Temperatures of the RAS (JIHT), Russian Academy of Sciences [Moscow] (RAS), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Don State Technical University, Institute of Applied Physics (IAP, Nizhny Novgorod), Dipartimento di Fisica 'Giuseppe Occhialini' = Department of Physics 'Giuseppe Occhialini' [Milano-Bicocca], Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Institut für Laser und Plasmaphysik, Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)

Subjects
Astrophysical plasmas, Nuclear and High Energy Physics, Tokamak, Atmospheric-pressure plasma, Outflows, 01 natural sciences, 010305 fluids & plasmas, law.invention, Magnetohydrodynamics, law, Physics::Plasma Physics, 0103 physical sciences, Jets, Magnetic pressure, 010306 general physics, Magnetosphere particle motion, ComputingMilieux_MISCELLANEOUS, Physics, [PHYS]Physics [physics], Jet (fluid), Radiation, Plasma, Magnetic field, [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Atomic physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Laser-plasma interactions
Abstract

The collimation of astrophysically-relevant plasma ejecta in the form of narrow jets via a poloidal magnetic field is studied experimentally by irradiating a target situated in a 20 T axial magnetic field with a 40 J, 0.6 ns, 0.7 mm diameter, high-power laser. The dynamics of the plasma shaping by the magnetic field are studied over 70 ns and up to 20 mm from the source by diagnosing the electron density, temperature and optical self-emission. These show that the initial expansion of the plasma is highly magnetized, which leads to the formation of a cavity structure when the kinetic plasma pressure compresses the magnetic field, resulting in an oblique shock [A. Ciardi et al., Phys. Rev. Lett. 110, 025002 (2013)]. The resulting poloidal magnetic nozzle collimates the plasma into a narrow jet [B. Albertazzi et al., Science 346, 325 (2014)]. At distances far from the target, the jet is only marginally magnetized and maintains a high aspect ratio due to its high Mach-number (M∼20) and not due to external magnetic pressure. The formation of the jet is evaluated over a range of laser intensities (1012–1013 W/cm2), target materials and orientations of the magnetic field. Plasma cavity formation is observed in all cases and the viability of long-range jet formation is found to be dependent on the orientation of the magnetic field.

Published
2017

34. SMILEI: a collaborative, open-source, multi-purpose particle-in-cell code for plasma simulation

Author

Anna Grassi, Nicolas Aunai, Julien Derouillat, Mickael Grech, M. Chiaramello, Frederic Perez, G. Bouchard, Caterina Riconda, Arnaud Beck, J. Dargent, I. Plotnikov, Tommaso Vinci, M. Flé, Centre hospitalier universitaire de Nantes (CHU Nantes), Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION, Computer science, Dynamic load balancing, FOS: Physical sciences, General Physics and Astronomy, Plasma, Python (programming language), Additional comments, Supercomputer, 01 natural sciences, Physics - Plasma Physics, 010305 fluids & plasmas, Computational science, Plasma Physics (physics.plasm-ph), Open source, Hardware and Architecture, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, Particle-in-cell, 010306 general physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], computer, Massively parallel, computer.programming_language
Abstract

SMILEI is a collaborative, open-source, object-oriented (C++) particle-in-cell code. To benefit from the latest advances in high-performance computing (HPC), SMILEI is co-developed by both physicists and HPC experts. The code's structures, capabilities, parallelization strategy and performances are discussed. Additional modules (e.g. to treat ionization or collisions), benchmarks and physics highlights are also presented. Multi-purpose and evolutive, SMILEI is applied today to a wide range of physics studies, from relativistic laser-plasma interaction to astrophysical plasmas., submitted to Computer Physics Communications

Published
2017

35. Ultrafast observation of lattice dynamics in laser-irradiated gold foils

Author

Andrew Krygier, T. A. Pikuz, Osami Sakata, A. Y. Faenov, Tadashi Togashi, Yasuhisa Sano, Emma McBride, R. Kodama, M. Koenig, Hideaki Habara, Norimasa Ozaki, Tomoko Sato, Yasushi Fujimoto, K. Takahashi, Yuhei Umeda, Yoshio Matsumura, Toshimori Sekine, Takuo Okuchi, Yuichi Inubushi, Tetsuo Katayama, Yoshinori Tange, T. Yabuuchi, Yusuke Seto, Tommaso Vinci, M. Harmand, N. J. Hartley, Toshimasa Matsuoka, Guillaume Morard, P. Mabey, Bruno Albertazzi, Satoshi Matsuyama, Kazuto Yamauchi, K. A. Tanaka, Makina Yabashi, and Kohei Miyanishi

Subjects
Diffraction, Materials science, Physics and Astronomy (miscellaneous), X-ray optics, Physics::Optics, 02 engineering and technology, 01 natural sciences, Molecular physics, law.invention, Lattice constant, Optics, law, 0103 physical sciences, 010306 general physics, Laser ablation, Scattering, business.industry, XFEL, 021001 nanoscience & nanotechnology, Laser, Laser-matter interaction, Femtosecond, X-ray crystallography, 0210 nano-technology, business
Abstract

N. J. Hartley, N. Ozaki, T. Matsuoka, B. Albertazzi, A. Faenov, Y. Fujimoto, H. Habara, M. Harmand, Y. Inubushi, T. Katayama, M. Koenig, A. Krygier, P. Mabey, Y. Matsumura, S. Matsuyama, E. E. McBride, K. Miyanishi, G. Morard, T. Okuchi, T. Pikuz, O. Sakata, Y. Sano, T. Sato, T. Sekine, Y. Seto, K. Takahashi, K. A. Tanaka, Y. Tange, T. Togashi, Y. Umeda, T. Vinci, M. Yabashi, T. Yabuuchi, K. Yamauchi, and R. Kodama , "Ultrafast observation of lattice dynamics in laser-irradiated gold foils", Appl. Phys. Lett. 110, 071905 (2017) https://doi.org/10.1063/1.4976541., We have observed the lattice expansion before the onset of compression in an optical-laser-driven target, using diffraction of femtosecond X-ray beams generated by the SPring-8 Angstrom Compact Free-electron Laser. The change in diffraction angle provides a direct measure of the lattice spacing, allowing the density to be calculated with a precision of ±1%. From the known equation of state relations, this allows an estimation of the temperature responsible for the expansion as

Published
2017

36. Laser-ablation and induced nanoparticle synthesis

Author

Dimitri Batani, Davide Bleiner, and Tommaso Vinci

Subjects
Equation of state, Phase transition, Spinodal, Laser ablation, Materials science, business.industry, Nanoparticle, 620 Engineering, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Pulse (physics), law.invention, law, Optoelectronics, Physical chemistry, Irradiation, Electrical and Electronic Engineering, business
Abstract

Laser pulses are largely used for processing and analysis of materials and in particular for nano-particle synthesis. This paper addresses fundamentals of the generation of nano-materials following specific thermodynamic paths of the irradiated material. Computer simulations using the hydro code MULTI and the SESAME equation of state have been performed to follow the dynamics of a target initially heated by a short laser pulse over a distance comparable to the metal skin depth.

Published
2013

37. Optimization of interaction conditions for efficient short laser pulse amplification by stimulated Brillouin scattering in the strongly coupled regime

Author

J.-R. Marquès, Stefan Weber, M. Chiaramello, Tommaso Vinci, Julien Fuchs, L. Lancia, Mickael Grech, F. Amiranoff, Caterina Riconda, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
7. Clean energy, 01 natural sciences, Spectral line, 010305 fluids & plasmas, law.invention, symbols.namesake, Optics, Brillouin scattering, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Pulse duration, Plasma, Condensed Matter Physics, Laser, Pulse (physics), Brillouin zone, symbols, Atomic physics, business, Raman spectroscopy
Abstract

Plasma amplification of low energy, a short (∼100–500 fs) laser pulse by an energetic long (∼10 ps) pulse via strong coupling Stimulated Brillouin Backscattering is investigated with an extensive analysis of one-dimensional particle-in-cell simulations. Parameters relevant to nowadays experimental conditions are investigated. The obtained seed pulse spectra are analyzed as a function of the interaction conditions such as plasma profile, pulses delay, and seed or pulse duration. The factors affecting the amount of energy transferred are determined, and the competition between Brillouin-based amplification and parasitic Raman backscattering is analyzed, leading to the optimization of the interaction conditions.

Published
2016

38. Kinetics of the ironα−ɛphase transition at high-strain rates: Experiment and model

Author

N. Amadou, Kohei Miyanishi, R. Kodama, E. Brambrink, Tommaso Vinci, A. Benuzzi-Mounaix, M. Koenig, François Guyot, Guillaume Morard, Norimasa Ozaki, T. de Rességuier, and G. Huser

Subjects
Phase transition, Materials science, Kinetics, Nucleation, Thermodynamics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Plateau (mathematics), Kinetic energy, Surface velocity, 01 natural sciences, High strain, 0103 physical sciences, Deformation (engineering), 010306 general physics, 0210 nano-technology
Abstract

In this article, we investigate the kinetics of the iron $\ensuremath{\alpha}\ensuremath{-}\ensuremath{\varepsilon}$ transition under laser-driven ramp compression for deformation rates ranging from 3 to $9\ifmmode\times\else\texttimes\fi{}{10}^{7}\phantom{\rule{0.28em}{0ex}}{\mathrm{s}}^{\ensuremath{-}1}$. As in previous work, we observe a plateau in the rear surface velocity profile at the transition. With increasing deformation rate the transition onset pressure raises from 11 to 25 GPa, while the plateau duration decreases. These kinetic effects are well reproduced by an Avrami-type kinetics model of nucleation and growth with a constant, nanosecond scale completion time, which suggests an isokinetic regime over the explored range of strain rates.

Published
2016

39. Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe

Author

Jon Headspith, Laurent Videau, Paul Loubeyre, Arnaud Sollier, Alessandra Benuzzi-Mounaix, Florent Occelli, William Helsby, R. Torchio, Olivier Mathon, S. N. Bland, Daniel E. Eakins, Tommaso Vinci, Emilien Lescoute, David J. Chapman, Sakura Pascarelli, European Synchrotron Radiation Facility (ESRF), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Daresbury Lab, SERC, Daresbury Lab., Imperial College London, and AWE Plc

Subjects
Materials science, Absorption spectroscopy, PHASE, 02 engineering and technology, Electronic structure, 01 natural sciences, Article, law.invention, PHYSICS, RATIO, law, 0103 physical sciences, 010306 general physics, Absorption (electromagnetic radiation), [PHYS]Physics [physics], X-ray absorption spectroscopy, Science & Technology, Multidisciplinary, Extended X-ray absorption fine structure, IRON, ELASTICITY, INERTIAL CONFINEMENT FUSION, Warm dense matter, 021001 nanoscience & nanotechnology, Synchrotron, Computational physics, Multidisciplinary Sciences, Amplitude, Science & Technology - Other Topics, 0210 nano-technology
Abstract

Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research. There exists very little experimental data probing WDM states at the atomic level to test current models and those performed up to now are limited in quality. Here, we report a proof-of-principle experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states of WDM Fe. Structural and electronic changes in Fe are clearly observed for the first time at such extreme conditions. The amplitude of the EXAFS oscillations persists up to 500 GPa and 17000 K, suggesting an enduring local order. Moreover, a discrepancy exists with respect to theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models.

Published
2016

40. Dissociation along the principal Hugoniot of the Laser Mégajoule ablator material

Author

R. Bolis, V. Recoules, Thomas Plisson, G. Huser, G. Salin, E. Brambrink, P. Colin-Lalu, and Tommaso Vinci

Subjects
Glow discharge, Materials science, Warm dense matter, Laser, 01 natural sciences, Dissociation (chemistry), 010305 fluids & plasmas, ABINIT, law.invention, law, 0103 physical sciences, Atomic physics, 010306 general physics, National Ignition Facility, Inertial confinement fusion, Laser Mégajoule
Abstract

Glow discharge polymer hydrocarbon (GDP-CH) is used as the ablator material in inertial confinement fusion (ICF) capsules for the Laser Megajoule and National Ignition Facility. Due to its fabrication process, GDP-CH chemical composition and structure differ from commercially available plastics and detailed knowledge of its properties in the warm dense matter regime is needed to achieve accurate design of ICF capsules. First-principles ab initio simulations of the GDP-CH principal Hugoniot up to 8 Mbar were performed using the quantum molecular dynamics (QMD) code abinit and showed that atomic bond dissociation has an effect on the compressibility. Results from these simulations are used to parametrize a quantum semiempirical model in order to generate a tabulated equation of state that includes dissociation. Hugoniot measurements obtained from an experiment conducted at the LULI2000 laser facility confirm QMD simulations as well as EOS modeling. We conclude by showing the EOS model influence on shock timing in a hydrodynamic simulation.

Published
2016

41. Porous carbon EOS: numerical analysis

Author

R. Dezulian, Dimitri Batani, A. Aliverdiev, and Tommaso Vinci

Subjects
Shock wave, Nuclear and High Energy Physics, Bulk modulus, Equation of state, Radiation, Materials science, Numerical analysis, chemistry.chemical_element, Thermodynamics, Condensed Matter Physics, Shock (mechanics), chemistry, Object-relational impedance mismatch, General Materials Science, Porous medium, Carbon
Abstract

In this paper, we address the problem of direct simulation of laser-driven shock experiments aiming at determining the equation of state (EOS) of carbon using the “relative” impedance mismatch method. In particular, using tabulated carbon EOS (SESAME library, material number 7830), we have found some difficulties in reducing the initial density of the material in simulations with porous carbon. We have therefore calculated a new EOS for porous carbon with a reduced bulk modulus.

Published
2010

42. Simulating earth core using high energy lasers

Author

A. Nourou, Tommaso Vinci, M. Koenig, François Guyot, Alessandra Ravasio, Alessandra Benuzzi-Mounaix, F. Occelli, Huigang Wei, Stephane Mazevet, E. Lescoute, Erik Brambrink, Guillaume Morard, T. de Rességuier, Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de minéralogie et de physique des milieux condensés (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers

Subjects
Nuclear and High Energy Physics, Phase transition, Equation of state, Materials science, Laser plasmas, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, law.invention, Aluminium, law, Phase (matter), 0103 physical sciences, 010306 general physics, Shocks, Radiation, Isentropic process, Inner core, Time evolution, Mechanics, 021001 nanoscience & nanotechnology, Laser, Geophysics, chemistry, Atomic physics, 0210 nano-technology
Abstract

International audience; The melting curve and equation of state of iron and iron alloys at the inner core boundary (330 GPa, about 5000 K) are still unknown. This severally limits current modelling of earth constitution and dynamics. In this paper, recent numerical and experimental studies performed using laser generated isentropic ramp compression on iron and aluminium samples are presented. On the experimental side, direct laser ramp compression was achieved on iron. Time-resolved measurements were compared to hydrodynamic computations accounting for the polymorphic phase transformations. Before studying iron that presents a solid-solid phase transition along the isentropic path, we studied the time evolution of the atomic structure of aluminium using molecular dynamics simulations at the same length and time scales as the experiment. Like many metals, aluminium presents an elasto-plastic phase transition and we studied, using this microscopic approach, the effect of plasticity on the backward integration technique used to extract equation of state information from the experimental VISAR signal.

Published
2010

43. Probing iron at Super-Earth core conditions

Author

Norimasa Ozaki, Stephane Mazevet, D. Raffestin, Guillaume Morard, N. Amadou, Michel Koenig, T. de Rességuier, Ryosuke Kodama, Tommaso Vinci, Erik Brambrink, T. R. Boehly, Olivier Henry, François Guyot, Alessandra Benuzzi-Mounaix, Stephanie Brygoo, Kohei Miyanishi, G. Huser, Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), CEA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Graduate School of Engineering [Suita, Osaka], Osaka University [Osaka], Graduate School of Engineering, Osaka University, Graduate School of Engineering, Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre d'études scientifiques et techniques d'Aquitaine (CESTA), Laboratory for lasers energetics - LLE (New-York, USA), University of Rochester [USA], Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Saclay-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA, Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), and Graduate School of Engineering [Osaka]

Subjects
Physics, [PHYS]Physics [physics], Super-Earth, Condensed Matter Physics, Laser, 7. Clean energy, 01 natural sciences, law.invention, Core (optical fiber), 13. Climate action, law, 0103 physical sciences, Irradiation, Atomic physics, 010306 general physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS
Abstract

In this paper, we report on the quasi-isentropic compression of an iron sample using ramp shaped laser irradiation. This technique allows us to quasi-isentropically compress iron up to 700 GPa and 8500 K. To our knowledge, these data are the highest pressures reached on iron in off-Hugoniot conditions and the closest to the thermodynamic states thought to exist in Earth-like planetary cores. The experiment was performed on the Ligne d'Integration laser facility at CESTA, Bordeaux, France.

Published
2015

44. X-ray absorption spectroscopy of iron at multimegabar pressures in laser shock experiments

Author

C. Fourment, Norimasa Ozaki, Jérôme Gaudin, Marion Harmand, Bob Nagler, Ryosuke Kodama, Motoaki Nakatsutsumi, Fabien Dorchies, Guillaume Morard, A. Denoeud, Yiping Feng, J. Bouchet, Stephane Mazevet, Kohei Miyanishi, Diling Zhu, R. Musella, Sven Toleikis, Tommaso Vinci, M. Koenig, Alessandra Benuzzi-Mounaix, Alessandra Ravasio, François Guyot, Ulf Zastrau, H. J. Lee, V. Recoules, Eric Galtier, Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), SLAC National Accelerator Laboratory (SLAC), Stanford University, Institute of Laser Engineering, Osaka University, Osaka, Japan, affiliation inconnue, European XFEL GmbH (XFEL), European XFEL GmbH, Photone Sciences, Deutsches Elektronen-Synchrotron (DESY), Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], ANR-12-PDOC-0011,IronFEL,Le fer et ses alliages sous conditions extrèmes et sondés par diagnostiques X sur les installations FEL et lasers intenses(2012), ANR-12-BS04-0015,PlanetLab,Propriètés des planètes et des exoplanètes en laboratoire(2012), Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Paris-Saclay-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), SLAC National Accelerator Laboratory, Friedrich-Schiller-Universität Jena, Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
X-ray absorption spectroscopy, Materials science, Free-electron laser, Diamond, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], engineering.material, Condensed Matter Physics, Laser, 01 natural sciences, Molecular physics, XANES, Spectral line, 010305 fluids & plasmas, Electronic, Optical and Magnetic Materials, law.invention, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, engineering, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], ddc:530, 010306 general physics, Spectroscopy, Absorption (electromagnetic radiation)
Abstract

International audience; Taking advantage of the new opportunities provided by x-ray free electron laser (FEL) sources when coupled to a long laser pulse as available at the Linear Coherent Light Source (LCLS), we have performed x-ray absorption near-edge spectroscopy (XANES) of laser shock compressed iron up to 420 GPa (±50) and 10 800 K (±1390). Visible diagnostics coupled with hydrodynamic simulations were used to infer the thermodynamical conditions along the Hugoniot and the release adiabat. A modification of the pre-edge feature at 7.12 keV in the XANES spectra is observed above pressures of 260 GPa along the Hugoniot. Comparing with ab initio calculations and with previous laser-heated diamond cell data, we propose that such changes in the XANES pre-edge could be a signature of molten iron. This interpretation then suggests that iron is molten at pressures and temperatures higher than 260 GPa (±29) and 5680 K (±700) along the principal Fe Hugoniot.

Published
2015

45. Are long gamma-ray bursts biased tracers of star formation? Clues from the host galaxies of the Swift/BAT6 complete sample of LGRBs

Author

Patrick Petitjean, Stefano Covino, Jochen Greiner, E. Le Floc'h, Sergio Campana, Samuel Boissier, L. K. Hunt, S. D. Vergani, Andrew J. Levan, P. D'Avanzo, Alberto Fernández-Soto, Thomas Krühler, A. Melandri, J. Japelj, Mathieu Puech, Andreja Gomboc, Daniel A. Perley, Tommaso Vinci, F. Hammer, Hector Flores, G. Tagliaferri, Ruben Salvaterra, F. Mannucci, Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Max-Planck-Institut für Extraterrestrische Physik (MPE), INAF - Osservatorio Astrofisico di Arcetri (OAA), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Paris-Saclay-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), ANR-11-IDEX-0005-02/10-LABX-0023,UnivEarthS,Earth - Planets - Universe: observation, modeling, transfer(2011), European Project: 312430,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2012-1-RTD,OPTICON(2013), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), ANR-11-IDEX-0005,USPC,Université Sorbonne Paris Cité(2011), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
Stellar mass, Metallicity, Astrophysics::High Energy Astrophysical Phenomena, Population, gamma-ray burst: general, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, QC, Astrophysics::Galaxy Astrophysics, QB, Physics, education.field_of_study, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Galaxy, Stars, galaxies: photometry, Space and Planetary Science, galaxies: star formation, Spectral energy distribution, Astrophysics::Earth and Planetary Astrophysics, Gamma-ray burst, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

Aims: Long gamma-ray bursts (LGRBs) are associated with massive stars and are therefore linked to star formation. However, the conditions needed for the progenitor stars to produce LGRBs can affect the relation between the LGRB rate and star formation. By using the power of a complete LGRB sample, our long-term aim is to understand whether such a bias exists and, if it does, what its origin is. Methods: To reach our goal we use the Swift/BAT6 complete sample of LGRBs. In this first paper, we build the spectral energy distribution (SED) of the 14 z < 1 host galaxies of the BAT6 LGRB sample and determine their stellar masses (M⋆) from SED fitting. To investigate the presence of a bias in the LGRB-star formation relation we compare the stellar mass distribution of the LGRB host galaxies (i) with star-forming galaxies observed in deep surveys (UltraVISTA) within the same redshift limit; (ii) with semi-analytical models of the z < 1 star-forming galaxy population; and (iii) with dedicated numerical simulations of LGRB hosts having different metallicity thresholds for the progenitor star environment. Results: We find that at z < 1, LGRBs tend to avoid massive galaxies and are very powerful for selecting a population of faint low-mass star-forming galaxies, partly below the completeness limits of galaxy surveys. The stellar mass distribution of the hosts is not consistent with that of the UltraVISTA star-forming galaxies weighted by their star formation rate (SFR). This implies that, at least at z < 1, LGRBs are not unbiased tracers of star formation. To make the two distributions consistent, a much steeper faint end of the mass function would be required or a very shallow SFR-mass relation for the low-mass galaxy population. The comparison with the GRB host galaxy simulations indicates that, to reproduce the stellar mass distribution, a metallicity threshold of the order of Zth = 0.3-0.5 Z☉ is necessary to form a LGRB. Models without a metallicity threshold or with an extreme threshold of Zth = 0.1 Z☉ are excluded at z < 1. Under a very basic assumption, we estimate that the LGRB rate can directly trace the SFR starting from z ~ 4 and above. Conclusions: GRB hosts at z < 1 have lower luminosities and stellar masses than expected if LGRBs were unbiased star formation tracers. The use of the Swift/BAT6 complete sample keeps this result from being affected by possible biases that could have influenced past results based on incomplete samples. The preference for low metallicities (Z ≲ 0.5 Z☉) inferred by the comparison with the simulations can be a consequence of the particular conditions needed for the progenitor star to produce a GRB. Appendix A is available in electronic form at http://www.aanda.org

Published
2015

46. Theoretical and Experimental Studies of Radiative Shocks

Author

G. Herpe, Stefano Atzeni, Serge Bouquet, L. Boireau, Alessandra Benuzzi-Mounaix, N. Osaki, Berenice Loupias, Tommaso Vinci, C. Michaut, Emeric Falize, M. Koenig, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Théorique et Appliquée (DPTA), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and Dipartemento di Energetica, Universitá di Roma La Sapienza and INFM

Subjects
Physics, high-power laser, hydrodynamics, plasma, radiation transfer, radiative shock, Astrophysics::High Energy Astrophysical Phenomena, Astronomy and Astrophysics, Astrophysics, Plasma, Cosmology, Accretion (astrophysics), Interstellar medium, Stars, Supernova, Atmospheric radiative transfer codes, Space and Planetary Science, Radiative transfer, Astrophysics::Solar and Stellar Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics::Galaxy Astrophysics
Abstract

International audience; This paper deals with the radiative shock from both theoretical and numerical points of view. It is based on the whole experimental results obtained at Laboratoire d'Utilisation des Lasers Intenses (LULI, École Polytechnique). Radiative shocks are high-Mach number shocks with a strong coupling between radiation and hydrodynamics which leads to a structure governed by a radiative precursor. These shocks are involved in various astrophysical systems: stellar accretion shocks, pulsating stars, interaction between supernovae and the interstellar medium. In laboratory, these radiative shocks are generated using high power lasers. New diagnostics have been implemented to study the geometrical shape of the shock and the front shock density. Data were obtained varying initial conditions for different laser intensities and temperature. The modeling of these phenomena is mainly performed through numerical simulations (1D and 2D) and analytical studies. We exhibit results obtained from several radiative hydrodynamics codes. As a result, it is possible to discuss about the influence of the geometry and physical parameters introduced in the 1D and 2D models.

Published
2006

47. Laser-driven shock waves for the study of extreme matter states

Author

Alessandra Ravasio, Angelo Schiavi, T. R. Boehly, T. A. Pikuz, Tommaso Vinci, Dimitri Batani, C. A. Cecchetti, Serge Bouquet, Stefano Atzeni, G. Huser, Marco Borghesi, S. Le Pape, P. K. Patel, M. M. Notley, Norimasa Ozaki, Yefim Aglitskiy, Damien Hicks, E. A. Henry, H. S. Park, R. Dezulian, A. J. Mackinnon, M. Rabec Le Gloahec, M. Koenig, C. Michaut, R. Clark, A. Y. Faenov, Alessandra Benuzzi-Mounaix, S Bandyopadhyay, K. A. Tanaka, Berenice Loupias, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Lawrence Livermore National Laboratory (LLNL), Laboratory for Laser Energetics, Queen's University, Central Laser Facility Rutherford, Appleton Laboratory, Chilton, Oxfordshire, Dipartimento di Energetica, Università di Roma La Sapienza and CNISM, Science Applications International Corporation, McLean, Multicharged Ions Spectra Data Center, VNIIFRTI, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), and Institute of Laser Engineering, Osaka University

Subjects
Shock wave, Physics, Measure (physics), Condensed Matter Physics, Laser, Shock (mechanics), law.invention, Computational physics, Nuclear physics, Planetary science, Nuclear Energy and Engineering, law, Energy density, State of matter, Radiative transfer, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience; During the last ten years, the ability of high power lasers to generate high energy density shocks has made them a reliable tool to study extreme states of matter. These states of matter are relevant in many important physics areas such as astrophysics, planetology and ICF physics. Here, we present some representative studies performed by using a driven laser shock: melting of iron at pressures relevant for geophysics, developments of new techniques to measure the density of highly compressed matter and a study of a radiative shock.

Published
2006

48. Laser-driven flyer impact experiments at the LULI 2000 laser facility

Author

Alessandra Ravasio, Keiji Nagai, Norimasa Ozaki, M. Koenig, Alessandra Benuzzi-Mounaix, M. Esposito, G. Huser, Tommaso Vinci, K. A. Tanaka, S. Lepape, Masatake Yoshida, Wigen Nazarov, and E. Henry

Subjects
Shock wave, Fused quartz, Materials science, business.industry, General Physics and Astronomy, Laser, law.invention, Transverse plane, Optics, law, Shadowgraph, business, Electrical conductor, FOIL method
Abstract

New laser-driven flyer impact experiments have been performed at the LULI laboratory. In these experiments, three types of targets (single Al flyer, multi-layered, and foam-buffered high-Z metal) were used. Impacted conditions in fused quartz were measured with rear-side (two VISARs and SOP) and transverse diagnostics (shadowgraph). In the foam-buffered target, Ta foil was accelerated up to a velocity of 55 km/s. Shock wave accelerated in fused quartz by an Al flyer impact was generated, and the shock wave passing a distinct boundary to a conductive state was directly observed. This method is a way to create unique conditions within the EOS diagram of material.

Published
2006

49. Novel diagnostic of low-Z shock compressed material

Author

T. R. Boehly, Marco Borghesi, Tommaso Vinci, Michel Koenig, Emanuelle Martinolli, Sebastien Le Pape, P. K. Patel, Damien Hicks, Sataybrata Kar, Andy Mackinnon, Alessandra Bennuzzi-Mounaix, and Lorenzo Romagnani

Subjects
Aluminum foil, Nuclear and High Energy Physics, Radiation, Materials science, business.industry, Radiography, Proton radiography, Laser, Compression (physics), law.invention, Pulse (physics), Shock (mechanics), Optics, law, Physics::Accelerator Physics, business
Abstract

An experiment was performed using high-energy protons, generated by an intense short laser pulse, to try to characterize in situ, the spatial and temporal evolution of a laser-driven shock propagating through a low-Z material. Radiography of the shock propagating through the low-Z transparent material could lead to density determination under compression. A first test of a proton radiography of the rear-side released state of a shocked aluminum foil has also been tried.

Published
2006

50. Progress in the study of warm dense matter

Author

Norimasa Ozaki, Todd H. Hall, Lorenzo Romagnani, Marco Borghesi, H-S Park, Dimitri Batani, A. J. Mackinnon, M. Koenig, T. R. Boehly, Alessandra Ravasio, S. Lepape, Satyabrata Kar, Alessandra Benuzzi-Mounaix, Damien Hicks, P. K. Patel, G. Huser, and Tommaso Vinci

Subjects
Physics, High power lasers, business.industry, Plasma, Warm dense matter, Condensed Matter Physics, Instability, Shock (mechanics), Optics, Nuclear Energy and Engineering, Radiation pressure, State of matter, Plasma diagnostics, business
Abstract

In the last few years, high power lasers have demonstrated the possibility to explore a new state of matter, the so-called warm dense matter. Among the possible techniques utilized to generate this state, we present the dynamic compression technique using high power lasers. Applications to planetary cores material (iron) will be discussed. Finally new diagnostics such as proton and hard-x-ray radiography of a shock propagating in a solid target will be presented.

Published
2005

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