Search

Your search keyword '"H. Badran"' showing total 6 results
Start Over Author "H. Badran" Publisher hal ccsd
6 results on '"H. Badran"'

1. Evidence for octupole collectivity in $^{172}{\mathrm {Pt}}$

Author

E. Ganioglu, Rauno Julin, I. Özgür, R. D. Page, Eiji Ideguchi, O. Aktas, Sanna Stolze, E. S. Paul, J. Hilton, Torbjörn Bäck, H. W. Li, J. J. Valiente-Dobón, S. Matta, Mikael Sandzelius, Steffen Ketelhut, B. S. Nara Singh, Panu Rahkila, Tuomas Grahn, U. Jakobsson, Panu Ruotsalainen, C. M. Petrache, Megumi Niikura, D. M. Cullen, Jari Partanen, K. Andgren, Janne Pakarinen, Bo Cederwall, A. Ertoprak, B. Hadinia, D. Hodge, M. Kumar Raju, T. Calverley, Juha Sorri, Juha Uusitalo, V. Modamio, H. Badran, Paul Greenlees, Chong Qi, M. Nyman, Pauli Peura, Daniel Cox, A. Johnson, Jan Sarén, Y. D. Fang, Peter M. Jones, Michael Taylor, Matti Leino, Ramon Wyss, Thomas Braunroth, Catherine Scholey, H. Liu, Sakari Juutinen, Roberto Liotta, M. B. Gomez Hornillos, M. Doncel, M. M. Giles, P. Subramaniam, Philippos Papadakis, Anton Khaplanov, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, medicine.anatomical_structure, Excited state, 0103 physical sciences, medicine, Nuclear fusion, 010306 general physics, Nucleus, Excitation
Abstract

Excited states in the extremely neutron-deficient nucleus $$^{172}{\mathrm {Pt}}$$172Pt were populated via $$^{96}\mathrm {Ru}(^{78}\mathrm {Kr},2p)$$96Ru(78Kr,2p) and $$^{92}\mathrm {Mo}(^{83}\mathrm {Kr},3n)$$92Mo(83Kr,3n) reactions. The level scheme has been extended up to an excitation energy of $$\approx 5~\hbox {MeV}$$≈5MeV and tentative spin-parity assignments up to $$I^\pi = 18^+$$Iπ=18+. Linear polarization and angular distribution measurements were used to determine the electromagnetic E1 character of the dipole transitions connecting the positive-parity ground-state band with an excited side-band, firmly establishing it as a negative-parity band. The lowest member of this negative-parity structure was firmly assigned spin-parity $$3^-$$3-. In addition, we observed an E3 transition from this $$3^-$$3- state to the ground state, providing direct evidence for octupole collectivity in $$^{172}{\mathrm {Pt}}$$172Pt. Large-scale shell model (LSSM) and total Routhian surface (TRS) calculations have been performed, supporting the interpretation of the $$3^-$$3- state as a collective octupole-vibrational state.

Published
2020

2. Highly deformed bands in Nd nuclei: New results and consistent interpretation within the cranked Nilsson-Strutinsky formalism

Author

C. Scholey, Rauno Julin, S. Juutinen, Mikael Sandzelius, A. Ertoprak, J. Srebrny, J. Konki, Tuomas Grahn, A. Tucholski, Daniel Cox, Juha Uusitalo, H. Badran, Juha Sorri, Paul Greenlees, Bo Cederwall, Song Guo, E. Dupont, C. M. Petrache, Sanna Stolze, József Tímár, A. Astier, Philippos Papadakis, X. H. Zhou, Jukka Partanen, Huan Liu, T. Calverley, István Kuti, Jianlu Wang, K. K. Zheng, B. F. Lv, Jan Sarén, J. Hilton, O. Aktas, Janne Pakarinen, Panu Ruotsalainen, Corina Andreoiu, Panu Rahkila, M. L. Liu, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, 010308 nuclear & particles physics, Yrast, Nuclear Theory, Nuclear structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Structure, 01 natural sciences, Formalism (philosophy of mathematics), Atomic orbital, 0103 physical sciences, Neutron, Band crossing, Atomic physics, ydinfysiikka, 010306 general physics
Abstract

International audience; Three new highly-deformed (HD) bands are identified in Nd136 and the highly deformed band of Nd137 is extended at higher spin by four transitions, revealing a band crossing associated with the occupation of the second νi13/2 intruder orbital. Extended cranked Nilsson-Strutinsky calculations are performed for all HD bands observed in Nd134, Nd136, and Nd137, achieving for the first time a consistent interpretation of all HD bands in the Nd nuclei. The new interpretation has significant consequences, like the change of parity of the yrast HD bands of Nd134 and Nd136, and the involvement of two negative-parity neutron intruder orbitals in the configurations of most HD bands. The present experimental results and their theoretical interpretation represent an important step forward in the understanding of the second-minimum excitations in the Nd nuclei.

Published
2019

3. Collective rotation of an oblate nucleus at very high spin

Author

A. Astier, C. M. Petrache, József Tímár, Philippos Papadakis, Song Guo, Jan Sarén, Tuomas Grahn, Juha Uusitalo, Rauno Julin, Joonas Konki, Sanna Stolze, Paul Greenlees, Sakari Juutinen, O. Aktas, J. Srebrny, Juha Sorri, István Kuti, S. Frauendorf, Daniel Cox, E. Dupont, B. F. Lv, Jari Partanen, Bo Cederwall, Catherine Scholey, Janne Pakarinen, Panu Rahkila, M. L. Liu, Kaihang Wang, Corina Andreoiu, Mikael Sandzelius, X. H. Zhou, Huan Liu, H. Badran, A. Ertoprak, A. Tucholski, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, nuclear spin, ta114, 010308 nuclear & particles physics, Nuclear Theory, collective models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Rotation, Nuclear Structure, 01 natural sciences, medicine.anatomical_structure, electromagnetic transitions, 0103 physical sciences, Quadrupole, Oblate spheroid, medicine, Equidistant, collective levels, Atomic physics, 010306 general physics, Spin (physics), ydinfysiikka, Nucleus, Sequence (medicine)
Abstract

International audience; A sequence of nine almost equidistant quadrupole transitions is observed in Nd137. The sequence represents an extremely regular rotational band that extends to a spin of about 75/2 and an excitation energy of ≈4.5MeV above yrast. Cranked mean-field calculations of the Nilsson-Strutinsky type suggest an oblate shape for the band. They reproduce the observed I(I+1) dependence of the rotational energy whereas predicting a pronounced decrease in the deformation, which is the hallmark of antimagnetic rotation.

Published
2019

4. Lifetime measurements of excited states in $^{163}$W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Jan Sarén, Paul Greenlees, J. Hilton, C. Henrich, T. Kröll, A. D. Briscoe, T. Calverley, Tuomas Grahn, Michael Taylor, M. A. M. AlAqeel, C. Scholey, R.-D. Herzberg, M. M. Giles, E. Higgins, M. Doncel, L. Barber, A. Dewald, A. Herzáň, Thomas Braunroth, Mikael Sandzelius, Juha Uusitalo, J. Simpson, D. M. Cullen, M. Labiche, S.V. Szwec, B. Saygi, E. Parr, Sanna Stolze, K. R. Mashtakov, M. Siciliano, R. D. Page, Jari Partanen, D. T. Joss, E. S. Paul, Rauno Julin, S. Juutinen, P. Spagnoletti, B. S. Nara Singh, Panu Rahkila, H. Badran, J. M. Keatings, M. C. Lewis, S. Ilieva, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and Ege Üniversitesi

Subjects
Nuclear and High Energy Physics, spektroskopia, Nuclear Theory, Mean lifetimes, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, symbols.namesake, 0103 physical sciences, Collective model, medicine, Neutron, Gamma spectroscopy, 010306 general physics, Nuclear Experiment, Physics, mean lifetimes, 010308 nuclear & particles physics, Recoil-distance Doppler-shift method, lcsh:QC1-999, Nuclear deformation, Gamma-ray Spectroscopy, Core (optical fiber), Rotational model, medicine.anatomical_structure, B(E2) reduced transition probabilities, gamma-ray spectroscopy, Excited state, symbols, Atomic physics, ydinfysiikka, Nucleus, Doppler effect, lcsh:Physics
Abstract

Grahn, Tuomas/0000-0002-6255-2279; Herzan, Andrej/0000-0002-6736-7638; Cullen, Dave/0000-0002-0041-1606; Barber, Liam/0000-0002-7409-9352; Keatings, James Michael/0000-0003-4271-8021; SAYGI, BAHADIR/0000-0001-5406-506X; Greenlees, Paul/0000-0002-5986-5274; Spagnoletti, Pietro/0000-0002-7674-989X; Parr, Edward/0000-0001-6204-4461; Bondili, S Nara Singh/0000-0002-4096-2429, WOS: 000494939000022, This letter reports lifetime measurements of excited states in the odd-N nucleus W-163 using the recoil-distance Doppler shift method to probe the core polarising effect of the i(13/2) neutron orbital on the underlying soft triaxial even-even core. the ratio B(E2:21/2(+) -> 17/2(+))/B(E2:17/2(+) -> 13/2(+)) is consistent with the predictions of the collective rotational model. the deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed. (C) 2019 the Authors. Published by Elsevier B.V., UK Science and Technology Facilities CouncilScience & Technology Facilities Council (STFC) [ST/P004598/1, ST/L005670/1, ST/L005794/1]; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [117F508]; EU HORIZON2020 programme "Infrastructures" [654002]; Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL); Science and Technology Facilities CouncilScience & Technology Facilities Council (STFC) [1643549] Funding Source: researchfish, This work has been supported by the UK Science and Technology Facilities Council under grants ST/P004598/1, ST/L005670/1 and ST/L005794/1; the Scientific and Technological Research Council of Turkey (TUBITAK Project No: 117F508); the EU HORIZON2020 programme "Infrastructures", project number: 654002 (ENSAR2) and by the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL). the UK/France (STFC/IN2P3) Loan Pool and GAMMAPOOL network are acknowledged for the HPGe escapesuppressed detectors of the JUROGAM II array.

Published
2019

5. Evidence of chiral bands in even-even nuclei

Author

Pengwei Zhao, Jan Sarén, E. Dupont, Panu Rahkila, M. L. Liu, C. M. Petrache, József Tímár, Mikael Sandzelius, A. Tucholski, Paul Greenlees, Sakari Juutinen, Yarong Wang, Jari Partanen, O. Aktas, H. Badran, Janne Pakarinen, Corina Andreoiu, Tuomas Grahn, Kaihang Wang, István Kuti, Jie Meng, S. Matta, Joonas Konki, P. Subramaniam, Shishu Zhang, A. Ertoprak, X. H. Zhou, Philippos Papadakis, Huan Liu, Juha Uusitalo, Bo Cederwall, Song Guo, Sanna Stolze, Juha Sorri, Z. X. Ren, A. Astier, Rauno Julin, B. F. Lv, J. Srebrny, Catherine Scholey, Daniel Cox, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, level densities, ta114, 010308 nuclear & particles physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Molecular physics, nuclear structure and decays, medicine.anatomical_structure, electromagnetic transitions, Physical Sciences, 0103 physical sciences, medicine, Fysik, collective levels, energy levels, 010306 general physics, Nucleus
Abstract

Evidence for chiral doublet bands has been observed for the first time in the even-even nucleus 136 Nd . One chiral band was firmly established. Four other candidates for chiral bands were also identified, which can contribute to the realization of the multiple pairs of chiral doublet bands ( M χ D ) phenomenon. The observed bands are investigated by the constrained and tilted axis cranking covariant density functional theory (TAC-CDFT). Possible configurations have been explored. The experimental energy spectra, angular momenta, and B ( M 1 ) / B ( E 2 ) values for the assigned configurations are globally reproduced by TAC-CDFT. Calculated results support the chiral interpretation of the observed bands, which correspond to shapes with maximum triaxiality induced by different multiquasiparticle configurations in 136 Nd . peerReviewed

Published
2018

6. Towards saturation of the electron-capture delayed fission probability: The new isotopes $^{240}Es$ and $^{236}Bk$

Author

Rauno Julin, J. Khuyagbaatar, Bettina Lommel, Juha Sorri, Kalle Auranen, R. Briselet, Philippos Papadakis, R-D Herzberg, Paul Greenlees, K. Hauschild, Pauli Peura, J. Krier, Katsuhisa Nishio, Panu Rahkila, S. Juutinen, Sanna Stolze, Joonas Konki, B. Sulignano, Michael Block, Egon Jäger, Ch. Theisen, Mahananda Dasgupta, Alexander Yakushev, Tuomas Grahn, M. J. Mallaburn, Jari Partanen, K. Rezynkina, Janne Pakarinen, A. Ward, Andrej Herzan, Duc Huy Luong, Mikael Sandzelius, David Hinde, V. Yakusheva, Panu Ruotsalainen, Juha Uusitalo, Daniel Cox, A. Di Nitto, Jan Sarén, H. Badran, Ch. E. Düllmann, Birgit Kindler, F. P. Heßberger, A. Lopez-Martens, Matti Leino, C. Scholey, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Konki, J., Khuyagbaatar, J., Uusitalo, J., Greenlees, P. T., Auranen, K., Badran, H., Block, M., Briselet, R., Cox, D. M., Dasgupta, M., Di Nitto, A., Dullmann, C. E., Grahn, T., Hauschild, K., Herzan, A., Herzberg, R. -D., Hessberger, F. P., Hinde, D. J., Julin, R., Juutinen, S., Jager, E., Kindler, B., Krier, J., Leino, M., Lommel, B., Lopez-Martens, A., Luong, D. H., Mallaburn, M., Nishio, K., Pakarinen, J., Papadakis, P., Partanen, J., Peura, P., Rahkila, P., Rezynkina, K., Ruotsalainen, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., Stolze, S., Sulignano, B., Theisen, C., Ward, A., Yakushev, A., and Yakusheva, V.

Subjects
Electron-capture delayed fission, Nuclear and High Energy Physics, Electron capture, Fission, Fusion–evaporation reaction, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 236 Bk, 01 natural sciences, 7. Clean energy, Recoil separator, Nuclear physics, fusion-evaporation reactions, 236Bk, 240Es, 240 Es, 0103 physical sciences, ddc:530, 010306 general physics, α decay, isotopes, Physics, Isotope, ta114, Isotopes with mass 236–240, 010308 nuclear & particles physics, lcsh:QC1-999, Exponential function, Bk, mass, Atomic physics, Saturation (chemistry), Fusion–evaporation reactions, α particles, lcsh:Physics, Radioactive decay
Abstract

The new neutron-deficient nuclei 240 Es and 236 Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240 Es produced in the fusion–evaporation reaction 209 Bi( 34 S,3n) 240 Es. Half-lives of 6 ( 2 ) s and 22 − 6 + 13 s were obtained for 240 Es and 236 Bk, respectively. Two groups of α particles with energies E α = 8.19 ( 3 ) MeV and 8.09 ( 3 ) MeV were unambiguously assigned to 240 Es. Electron-capture delayed fission branches with probabilities of 0.16 ( 6 ) and 0.04 ( 2 ) were measured for 240 Es and 236 Bk, respectively. These new data show a continuation of the exponential increase of ECDF probabilities in more neutron-deficient isotopes.

Published
2017

Catalog

Books, media, physical & digital resources
See catalog results