Author: "B. Ban-d'Etat" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"B. Ban-d'Etat"' showing total 37 results

Start Over Author "B. Ban-d'Etat"

37 results on '"B. Ban-d'Etat"'

1. Nanopatterning surfaces by grazing incidence swift heavy ion irradiation

Author: Ivančica Bogdanović-Radović, Maja Mičetić, Henning Lebius, K. Žužek Rožman, B. Ban-d'Etat, Marika Schleberger, Marko Karlušić, Sigrid Bernstorff, M. Krešić, B. Šantić, Milko Jakšić, J.H. O'Connell, Ulrich Hagemann, Ruđer Bošković Institute (IRB), Elettra Sincrotrone Trieste, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Jozef Stefan Institute [Ljubljana] (IJS), Nelson Mandela University [Port Elizabeth], Fakultät für Physik (CeNIDE), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Nelson Mandela Metropolitan University [Port Elizabeth, South Africa], and Universität Duisburg-Essen [Essen]
Subjects: Materials science, General Physics and Astronomy, 02 engineering and technology, Surface engineering, 010402 general chemistry, 01 natural sciences, Fluence, Ion, Swift heavy ion, Etching (microfabrication), Irradiation, swift heavy ion, ion track, surface engineering, nanopatterning, business.industry, Physics, Ion track, Surfaces and Interfaces, General Chemistry, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Isotropic etching, 0104 chemical sciences, Surfaces, Coatings and Films, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, 0210 nano-technology, business
Abstract: International audience; Nanopatterned surfaces play a key role for many applications exploiting unique features such as an enhanced surface area, long- and short-ranged morphology modulations or a spatial variation of electronic and chemical properties. Ion beam irradiation has been frequently used for nanostructuring bulk materials because it is efficient, fast, and cost-effective. In this paper we show that ion irradiation under extremely grazing incidence in conjunction with other scalable processing methods such as wet etching and thermal annealing, is a perfect tool for nanopatterning of dielectric surfaces. We demonstrate that by tuning ion energy and fluence, one can select different surface nanopattern morphologies like individual chains of nanohillocks, nanostripes, or nanoscaled ripples. Furthermore, chemical etching of the irradiated surface can be used to create a negative replica of the nanopattern as only the material making up the surface track is susceptible to the etching process and is thus removed. Also, a removal of the surface track can be achieved by thermal annealing in vacuum. All these presented strategies open up new ways for achieving control over nanoscale surface modifications using swift heavy ion beams.
Published: 2021
Full Text: View/download PDF

2. Erratum to: Sputtering of LiF and other halide crystals in the electronic energy loss regime

Author: Tim Seidl, Philippe Boduch, Daniel Severin, K.-O. Voss, Markus Bender, Florian Grüner, Walter Assmann, Jie Liu, B. Ban-d'Etat, Serge Della Negra, Hermann Rothard, Jinglai Duan, J.P. Stoquert, Christina Trautmann, Andreas Bergmaier, A.S. El-Said, D. Lelièvre, and Marcel Toulemonde
Subjects: Physics, Sputtering, Optical physics, Halide, Plasma, Atomic physics, Electronic energy, Atomic and Molecular Physics, and Optics
Abstract: A typographical error remains in the publication of the first name of Aymann S. El-Said: Aymann should be written as Ayman.
Published: 2020
Full Text: View/download PDF

3. Sputtering of LiF and other halide crystals in the electronic energy loss regime

Author: Tim Seidl, Philippe Boduch, Christina Trautmann, Andreas Bergmaier, K.-O. Voss, Jie Liu, Florian Grüner, J.P. Stoquert, Jinglai Duan, Serge Della Negra, Daniel Severin, Walter Assmann, Markus Bender, D. Lelièvre, Aymann S. El-Said, Marcel Toulemonde, Hermann Rothard, B. Ban-d'Etat, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), 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), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)
Subjects: [PHYS]Physics [physics], Range (particle radiation), Yield (engineering), Materials science, 020502 materials, 02 engineering and technology, 01 natural sciences, Power law, Atomic and Molecular Physics, and Optics, Ion, Elastic recoil detection, Condensed Matter::Materials Science, 0205 materials engineering, Sputtering, Atomic and Molecular Collisions, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Irradiation, Atomic physics, 010306 general physics, Beam (structure)
Abstract: International audience; Sputtering experiments were performed by irradiating LiF, NaCl, and RbCl crystals with various swift heavy ions like S, Ni, I, Au with energies between 60 and 210 MeV, C$_{60}$ clusters between 12 and 30 MeV or Pb ions between 730 and 6040 MeV. Sputtered species are collected on arc-shaped catchers and subsequently analyzed by elastic recoil detection analysis or Rutherford backscattering analysis. The study focuses on angular distributions and total yields for LiF and covers a broad range of experimental parameters including cleaved or rough sample surfaces, ion fluence, beam incident angles, and different ion velocities leading to electronic energy loss (S$_{e}$) values from 5 to 45 keV/nm. In most cases, the angular distribution has two components, a jet-like peak perpendicular to the surface sample superimposed on a broad isotropic cosine distribution whatever is the beam incident angle. The observation of the jet depends mainly on the surface flatness and angle of ion incidence. However, the jet does not appear clearly when irradiated with C$_{60}$ cluster. The sputtering yield is stoichiometric and characterized by huge total yields of up to a few 10$^{5}$ atoms per incident ion. The yield follows a power law as function of electronic energy loss, Y follows an exponential law with S$_{e}^{n}$ with n ~ 4. While the azimuthal symmetry for sputtering is observed at low ion velocity (~1 MeV/u), it seems to be lost at high velocity (>4 MeV/u). The data provide a comprehensive overview how the angular distribution and the total sputtering yield scale with the energy loss, beam incidence angle and ion velocity. Complementary experiments have been done with NaCl and RbCl targets confirming the observation made for LiF.[graphic not available: see fulltext][graphic not available: see fulltext]
Published: 2020
Full Text: View/download PDF

4. Charge-state related effects in sputtering of LiF by swift heavy ions

Author: Philippe Boduch, Tim Seidl, B. Ban-d'Etat, Daniel Severin, Pedro Luis Grande, Walter Assmann, Christina Trautmann, G.G. Marmitt, Markus Bender, Marcel Toulemonde, K.-O. Voss, D. Lelièvre, Hermann Rothard, Henning Lebius, Ludwig-Maximilians-Universität München (LMU), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Gesellschaft für Schwerionenforschung (GSI), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Technische Universität Darmstadt (TU Darmstadt), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)
Subjects: [PHYS]Physics [physics], Nuclear and High Energy Physics, Jet (fluid), Materials science, Isotropy, Charge (physics), 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Ion, Elastic recoil detection, Angular distribution, Sputtering, 0103 physical sciences, Atomic physics, 010306 general physics, 0210 nano-technology, Electronic energy, Instrumentation
Abstract: International audience; Sputtering experiments with swift heavy ions in the electronic energy loss regime were performed by using the catcher technique in combination with elastic recoil detection analysis. The angular distribution of particles sputtered from the surface of LiF single crystals is composed of a jet-like peak superimposed on a broad isotropic distribution. By using incident ions of fixed energy but different charges states, the influence of the electronic energy loss on both components is probed. We find indications that isotropic sputtering originates from near-surface layers, whereas the jet component may be affected by contributions from depth up to about 150 nm.
Published: 2017
Full Text: View/download PDF

5. Highly active single-layer MoS2 catalysts synthesized by swift heavy ion irradiation

Author: Sebastian Kunze, Henrique Vázquez Muíños, Philipp Ernst, Carl H. Naylor, B. Ban-d’Etat, Beatriz Roldan Cuenya, Abdenacer Benyagoub, Lukas Madauß, Marika Schleberger, Yong-Wook Choi, Flyura Djurabekova, Oliver Ochedowski, Meng-Qiang Zhao, A. T. Charlie Johnson, Ioannis Zegkinoglou, Henning Lebius, Erik Pollmann, Universität Duisburg-Essen [Essen], Ruhr-Universität Bochum [Bochum], Helsinki Institute of Physics and Department of Physics, Department of Physics and Astronomy [Philadelphia], University of Pennsylvania [Philadelphia], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Department of Interface Science [Berlin], Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI), Max Planck Society-Max Planck Society, Universität Duisburg-Essen = University of Duisburg-Essen [Essen], University of Pennsylvania, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Department of Physics
Subjects: GRAPHENE, MECHANISM, Materials science, Ion beam, 116 Chemical sciences, SULFUR VACANCIES, EFFICIENT, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, Photochemistry, Electrochemistry, 114 Physical sciences, 01 natural sciences, law.invention, Catalysis, chemistry.chemical_compound, Swift heavy ion, MOLYBDENUM-DISULFIDE, law, General Materials Science, Irradiation, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Molybdenum disulfide, [PHYS]Physics [physics], SITES, HYDROGEN EVOLUTION, Graphene, 021001 nanoscience & nanotechnology, Sulfur, 0104 chemical sciences, chemistry, 0210 nano-technology
Abstract: Two-dimensional molybdenum-disulfide (MoS2) catlysts can achieve high catalytic activity for the hydrogen evolution reaction upon appropriate modification of their surface. The intrinsic inertness of the compound´s basal planes can be overcome by either increasing the number of catalytically active edge sites or by enhancing the activity of the basal planes via controlled creation of sulfur vacancies. Here, we report a novel method of activating the MoS2 surface in this respect using swift heavy ion irradiation. The creation of nanometer-scale structures by the ion beam, in combination with the partial sulfur depletion of the basal planes, leads to a large increase of the number of low-coordinated Mo atoms, which can form bonds with adsorbing species. This results in a decreased onset potential for hydrogen evolution, as well as in a significant enhance of the electrochemical current density by over 160% as compared to an identical but non-irradiated MoS2 surface.
Published: 2018
Full Text: View/download PDF

6. High resolution AFM studies of irradiated mica - Following the traces of swift heavy ions under grazing incidence

Author: Clara Grygiel, Jimmy Rangama, Abdenacer Benyagoub, Friedrich Aumayr, Lorenz Bergen, P. Salou, B. Ban-d'Etat, Delphine Levavasseur, E. Lattouf, Henning Lebius, Marika Schleberger, Yuyu Wang, Elisabeth Gruber, Institute of Applied Physics [Vienna] (TU Wien), Vienna University of Technology (TU Wien), Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China (IMP), Universität Duisburg-Essen [Essen], Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Universität Duisburg-Essen = University of Duisburg-Essen [Essen]
Subjects: IMPACTS, Materials science, Nanostructure, SURFACE, Analytical chemistry, swift heavy ions, high resolution AFM, 02 engineering and technology, engineering.material, SCANNING FORCE MICROSCOPY, Kinetic energy, 01 natural sciences, Ion, Swift heavy ion, NANODOTS, nanostructure formation, DEHYDRATION, 0103 physical sciences, General Materials Science, Irradiation, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, ion tracks, ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], CAF2, TRANSMISSION ELECTRON-MICROSCOPY, Muscovite, muscovite mica, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Angle of incidence (optics), grazing incidence, engineering, Mica, 0210 nano-technology
Abstract: High resolution AFM imaging of swift heavy ion irradiated muscovite mica under grazing incidence provides detailed insight into the created nanostructure features. Swift heavy ions under grazing incidence form a complex track structure along the surface, which consists of a double track of nanohillocks at the impact site accompanied by a single, several 100 nm long protrusion. Detailed track studies by varying the irradiation parameters, i.e. the angle of incidence (0.2 degrees-2 degrees) and the kinetic energy of the impinging ions (23, 55, 75, 95 MeV) are presented. Moreover, the track formation in dependence of the sample temperature (between room temperature and 600 degrees C) and of the chemical composition (muscovite mica and fluorphlogopite mica) is studied.
Published: 2018
Full Text: View/download PDF

7. Defect engineering of single- and few-layer MoS 2 by swift heavy ion irradiation

Author: Carl H. Naylor, B. Ban-d'Etat, Lukas Madauß, Henning Lebius, Marika Schleberger, Oliver Ochedowski, Jani Kotakoski, A. T. Charlie Johnson, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Physics Department, University of Pennsylvania, U. of Penn., University of Vienna [Vienna], Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, 02 engineering and technology, Substrate (electronics), 010402 general chemistry, 01 natural sciences, Swift heavy ion, General Materials Science, Irradiation, defects, Range (particle radiation), irradiation, business.industry, MoS 2, Mechanical Engineering, Bilayer, technology, industry, and agriculture, Defect engineering, General Chemistry, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Mechanics of Materials, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, 0210 nano-technology, business, Layer (electronics)
Abstract: International audience; Wehave investigated the possibility to use swift heavy ion irradiation for nano-structuring supported and freestanding ultra-thin MoS2 samples. Our comprehensive study of the ion-induced morphological changes in various MoS2 samples shows that depending on the irradiation parameters a multitude of extended defects can be fabricated. These range from chains of nano-hillocks in bulk-like MoS2, and foldings in single and bilayer MoS2, to unique nano-incisions in supported and freestanding single layers of MoS2. Our data reveals that the primary mechanism responsible for the incisions in the ultrathin supported samples is the indirect heating by the SiO2 substrate.We thus conclude that an energy of less than 2 keV pernmtrack length is sufficient to fabricate nano-incisions in MoS2 which is compatible with the use of the smallest accelerators.
Published: 2017
Full Text: View/download PDF

8. Fabrication of nanoporous graphene/polymer composite membranes

Author: Jens Schumacher, Christina Trautmann, Lukas Madauß, Marika Schleberger, Mathias Ulbricht, Jens Meyer, Mandakranta Ghosh, Oliver Ochedowski, Maria Eugenia Toimil-Molares, Henning Lebius, B. Ban-d'Etat, Rob G.H. Lammertink, Department of Physics and Center for Nanointegration, University of Duisburg-Essen (CENIDE), Center for Nanointegration Duisburg-Essen (CeNIDE), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Institute for Nanotechnology (MESA+), University of Twente, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), GSI Materialforschung, Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Universität Duisburg-Essen [Essen], University of Twente [Netherlands], Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), and Soft matter, Fluidics and Interfaces
Subjects: chemistry.chemical_classification, Materials science, Graphene, Nanoporous, Ion track, Graphene foam, Nanotechnology, 02 engineering and technology, Polymer, Physik (inkl. Astronomie), 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Isotropic etching, 0104 chemical sciences, law.invention, Membrane, chemistry, law, 2023 OA procedure, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], General Materials Science, 0210 nano-technology, Graphene oxide paper
Abstract: International audience; Graphene is currently investigated as a promising membrane material in which selective pores can be created depending on the requirements of the application. However, to handle large-area nanoporous graphene a stable support material is needed. Here, we report on composite membranes consisting of large-area single layer nanoporous graphene supported by a porous polymer. The fabrication is based on ion-track nanotechnology with swift heavy ions directly creating atomic pores in the graphene lattice and damaged tracks in the polymer support. Subsequent chemical etching converts the latent ion tracks in the supporting polymer foil, here polyethylene terephthalate (PET), into open microchannels while the perfectly aligned pores in the graphene top layer remain unaffected. To avoid unintentional damage creation and delamination of the graphene layer from the substrate, the graphene is encapsulated by a protecting poly(methyl methacrylate) (PMMA) layer. By this procedure a stable composite membrane is obtained consisting of nanoporous graphene (coverage close to 100%) suspended across selfaligned track-etched microchannels in a polymer support film. Our method presents a facile way to create high quality suspended graphene of tunable pore size supported on a flexible porous polymeric support, thus enabling the development of membranes for fast and selective ultrafiltration separation processes.
Published: 2017
Full Text: View/download PDF

9. 'Swift heavy ion track formation in SrTiO3 and TiO2 under random, channeling and near-channeling conditions

Author: Marika Schleberger, M. Jakšić, B. Ban-d'Etat, Marko Karlušić, René Heller, Henning Lebius, Richard A. Wilhelm, Institut Ruđer Bošković (IRB), Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Universität Duisburg-Essen = University of Duisburg-Essen [Essen]
Subjects: Acoustics and Ultrasonics, SrTiO3, SrTiO3, TiO2, swift heavy ion, ion track, thermal spike, RBS/c, AFM, 02 engineering and technology, ion track, 01 natural sciences, Ion, Swift heavy ion, Physics::Plasma Physics, 0103 physical sciences, Thermal, TiO2, Stopping power (particle radiation), swift heavy ion, 010306 general physics, Spectroscopy, RBS/c, Chemistry, thermal spike, Ion track, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Rutile, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], AFM, Atomic physics, 0210 nano-technology, Single crystal
Abstract: International audience; Conditions for ion track formation in single crystal SrTiO3 and TiO2 (rutile) after irradiations using swift heavy ion beams with specific energies below 1 MeV/amu were investigated in this work. Rutherford backscattering spectroscopy in channeling was used to measure ion tracks in the bulk, while atomic force microscopy was used for observation of ion tracks on the surfaces. Variations in the ion track sizes and respective thresholds were observed after irradiations under random, channeling and near-channeling conditions close to normal incidence. These variations are attributed to the specifics of the electronic stopping power of swift heavy ions under the investigated conditions. In the case of ion channeling, electronic stopping power is reduced and observed ion tracks are smaller. The opposite was found under the near-channeling conditions when lowering of the ion track formation threshold was observed. We attribute this finding to the oscillating electronic stopping power with large peak values. For both materials, thresholds for bulk and surface ion track formation were found to be surprisingly close, around 10 keV nm−1. Obtained results are compared with predictions of the analytical thermal spike model.
Published: 2017
Full Text: View/download PDF

10. Swift heavy ion irradiation of CaF2 : from grooves to hillocks in a single ion track

Author: Lorenz Bergen, Marika Schleberger, Yuyu Wang, Delphine Levavasseur, E. Lattouf, Friedrich Aumayr, Mourad El Kharrazi, B. Ban-d'Etat, Elisabeth Gruber, P. Salou, Jimmy Rangama, Clara Grygiel, Abdenacer Benyagoub, Henning Lebius, Institute of Applied Physics [Vienna] (TU Wien), Vienna University of Technology (TU Wien), Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], IMP - Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China, Atomes, Molécules et Agrégats (AMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Universität Duisburg-Essen = University of Duisburg-Essen [Essen]
Subjects: Chemistry, Projectile, chemistry.chemical_element, 02 engineering and technology, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Ion, Swift heavy ion, Xenon, Impact crater, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], General Materials Science, Sublimation (phase transition), Irradiation, Atomic physics, 010306 general physics, 0210 nano-technology, Hillock
Abstract: International audience; A novel form of ion-tracks, namely nanogrooves and hillocks, are observed on CaF2 after irradiation with xenon and lead ions of about 100 MeV kinetic energy. The irradiation is performed under grazing incidence (0.3°–3°) which forces the track to a region in close vicinity to the surface. Atomic force microscopy imaging of the impact sites with high spatial resolution reveals that the surface track consists in fact of three distinct parts: each swift heavy ion impacting on the CaF2 surface first opens a several 100 nm long groove bordered by a series of nanohillocks on both sides. The end of the groove is marked by a huge single hillock and the further penetration of the swift projectile into deeper layers of the target is accompanied by a single protrusion of several 100 nm in length slowly fading until the track vanishes.By comparing experimental data for various impact angles with results of a simulation, based on a three-dimensional version of the two-temperature-model (TTM), we are able to link the crater and hillock formation to sublimation and melting processes of CaF2 due to the local energy deposition by swift heavy ions.
Published: 2016
Full Text: View/download PDF

11. Electron yields from uranium dioxide under impact of slow Xe ions

Author: L. Maunoury, Henning Lebius, Hermann Rothard, Ph. Boduch, F. Haranger, and B. Ban-d’Etat
Subjects: Nuclear and High Energy Physics, chemistry.chemical_compound, Chemistry, Projectile, Electron capture, Yield (chemistry), Uranium dioxide, Highly charged ion, Electron, Atomic physics, Instrumentation, Secondary electrons, Ion
Abstract: Measurements of the secondary electron yields from uranium dioxide under impact of Xeq+ (q = 10–25, 0.03 keV ⩽ EKin ⩽ 81 keV) ions are presented. A strong increase of the secondary electron yield is observed with increasing charge state of the projectile both at normal and oblique incidences. No variation of the electron yield with the projectile kinetic energy is observed at normal incidence. Therefore, the electron emission process in highly charged ion – uranium dioxide (UO2) interactions is dominated by potential electron emission.
Published: 2007
Full Text: View/download PDF

12. Sputtering by highly charged ions: Application of the XY–TOF technique to secondary ion ejection from LiF

Author: Philippe Boduch, T. Jalowy, J. Lenoir, Henning Lebius, T. Been, J.M. Ramillon, Bruno Manil, Hermann Rothard, B. Ban-d’Etat, and Amine Cassimi
Subjects: Nuclear and High Energy Physics, Range (particle radiation), Chemistry, Projectile, Lithium fluoride, Elastic collision, Ion, Crystal, chemistry.chemical_compound, Physics::Plasma Physics, Sputtering, Atomic physics, Nuclear Experiment, Spectroscopy, Instrumentation
Abstract: The accelerator facilities of GANIL allow studying ion–surface collisions in a wide range of projectile velocities. On the one hand, high velocity heavy ions (MeV/ u ) where the electronic energy loss is dominant (electronic sputtering), and on the other hand, low velocity highly charged ions (keV/ q ) are available. In the latter case, nuclear stopping (elastic collision cascades) is more important. Possibly, further effects related to the high projectile charge and corresponding high potential energy can occur (potential sputtering). We use a combination of imaging techniques ( XY ) and time-of-flight (TOF) spectroscopy to measure the complete velocity vector of emitted secondary ions. We present results on energy and angular distributions of 7 Li + (atomic ions) sputtered from a LiF crystal by Ca 17+ (9 MeV/ u ) and Xe 21+ (17 keV/ q = 350 keV) ions. The energy distributions differ strongly thus clearly showing that the material responds differently to energy deposition by purely electronic stopping (high velocity projectiles) and slow highly charged ions. We also compare the angular distributions of emitted Li + ions and neutrals in the electronic stopping regime.
Published: 2007
Full Text: View/download PDF

13. Response of GaN to energetic ion irradiation: conditions for ion track formation

Author: Tobias Meisch, Ferdinand Scholz, Marika Schleberger, Henning Lebius, Maja Buljan, B. Ban-d'Etat, Marko Karlušić, Roland Kozubek, Sigrid Bernstorff, B. Šantić, Zdravko Siketić, Richard A. Wilhelm, M. Jakšić, Institut Ruđer Bošković (IRB), Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Universität Ulm - Ulm University [Ulm, Allemagne], Elettra Sincrotrone Trieste, Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Acoustics and Ultrasonics, Scattering, thermal spike, Ion track, Highly charged ion, highly charged ion, Physik (inkl. Astronomie), Channelling, Condensed Matter Physics, ion track, GaN, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Ion, swift heavy ion, Elastic recoil detection, Condensed Matter::Materials Science, Swift heavy ion, 13. Climate action, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Irradiation, Atomic physics
Abstract: International audience; We investigated the response of wurzite GaN thin films to energetic ion irradiation. Both swift heavy ions (92 MeV Xe23+, 23 MeV I6+) and highly charged ions (100 keV Xe40+) wereused. After irradiation, the samples were investigated using atomic force microscopy, grazing incidence small angle x-ray scattering, Rutherford backscattering spectroscopy in channelling orientation and time of flight elastic recoil detection analysis. Only grazing incidence swift heavy ion irradiation induced changes on the surface of the GaN, when the appearance of nanoholes is accompanied by a notable loss of nitrogen. The results are discussed in the framework of the thermal spike model.
Published: 2015
Full Text: View/download PDF

14. Nanostructuring Graphene by Dense Electronic Excitation

Author: Andrey Turchanin, B. Ban-d'Etat, Ossi Lehtinen, Marko Karlušić, Milko Jakšić, Marika Schleberger, Henning Lebius, Ute Kaiser, Oliver Ochedowski, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Universität Ulm - Ulm University [Ulm, Allemagne], Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Institut Ruđer Bošković (IRB), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Ion beam, FOS: Physical sciences, Bioengineering, Nanotechnology, 02 engineering and technology, 01 natural sciences, law.invention, Swift heavy ion, law, 0103 physical sciences, General Materials Science, Electrical and Electronic Engineering, 010306 general physics, Graphene oxide paper, Condensed Matter - Materials Science, Graphene, Mechanical Engineering, Bilayer, Materials Science (cond-mat.mtrl-sci), graphene, swift heavy ion, folding, General Chemistry, Physik (inkl. Astronomie), Condensed Matter Physics, 021001 nanoscience & nanotechnology, Nanopore, Mechanics of Materials, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, Bilayer graphene, Graphene nanoribbons
Abstract: The ability to manufacture tailored graphene nanostructures is a key factor to fully exploit its enormous technological potential. We have investigated nanostructures created in graphene by swift heavy ion induced folding. For our experiments, single layers of graphene exfoliated on various substrates and freestanding graphene have been irradiated and analyzed by atomic force and high resolution transmission electron microscopy as well as Raman spectroscopy. We show that the dense electronic excitation in the wake of the traversing ion yields characteristic nanostructures each of which may be fabricated by choosing the proper irradiation conditions. These nanostructures include unique morphologies such as closed bilayer edges with a given chirality or nanopores within supported as well as freestanding graphene. The length and orientation of the nanopore, and thus of the associated closed bilayer edge, may be simply controlled by the direction of the incoming ion beam. In freestanding graphene, swift heavy ion irradiation induces extremely small openings, offering the possibility to perforate graphene membranes in a controlled way., Comment: 16 pages, 5 figures, submitted to Nanotechnology
Published: 2015
Full Text: View/download PDF

15. Folding two dimensional crystals by swift heavy ion irradiation

Author: Lara Brökers, B. Ban-d'Etat, Henning Lebius, Hanna Bukowska, Victor M. Freire Soler, Oliver Ochedowski, Marika Schleberger, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], University of Barcelona, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Materials science, Hexagonal crystal system, Graphene, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Ion, law.invention, Folding (chemistry), Crystal, Swift heavy ion, Chemical physics, law, 0103 physical sciences, Mechanical strength, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Irradiation, Atomic physics, 010306 general physics, 0210 nano-technology, Instrumentation
Abstract: International audience; Ion irradiation of graphene, the showcase model of two dimensional crystals, has been successfully applied to induce various modifications in the graphene crystal. One of these modifications is the formation of origami like foldings in graphene which are created by swift heavy ion irradiation under glancing incidence angle. These foldings can be applied to locally alter the physical properties of graphene like mechanical strength or chemical reactivity. In this work we show that the formation of foldings in two dimensional crystals is not restricted to graphene but can be applied for other materials like MoS2 and hexagonal BN as well. Further we show that chemical vapour deposited graphene forms foldings after swift heavy ion irradiation while chemical vapour deposited MoS2 does not.
Published: 2014
Full Text: View/download PDF

16. Graphitic nanostripes in silicon carbide surfaces created by swift heavy ion irradiation

Author: O. Osmani, Marika Schleberger, Benedict Kleine Bussmann, Henning Lebius, B. Ban-d'Etat, Oliver Ochedowski, Martin Schade, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Donostia International Physics Center (DIPC), University of the Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), Faculty of Chemistry, University of Duisburg-Essen, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Multidisciplinary, Materials science, General Physics and Astronomy, Nanotechnology, General Chemistry, Physik (inkl. Astronomie), General Biochemistry, Genetics and Molecular Biology, Ion, chemistry.chemical_compound, Swift heavy ion, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Silicon carbide, Irradiation
Abstract: International audience; The controlled creation of defects in silicon carbide represents a major challenge. A wellknown and efficient tool for defect creation in dielectric materials is the irradiation with swift (EkinZ500 keV/amu) heavy ions, which deposit a significant amount of their kinetic energy into the electronic system. However, in the case of silicon carbide, a significant defect creation by individual ions could hitherto not be achieved. Here we present experimental evidence that silicon carbide surfaces can be modified by individual swift heavy ions with an energy well below the proposed threshold if the irradiation takes place under oblique angles. Depending on the angle of incidence, these grooves can span several hundreds of nanometres. We show that our experimental data are fully compatible with the assumption that each ion induces the sublimation of silicon atoms along its trajectory, resulting in narrow graphitic grooves in the silicon carbide matrix.
Published: 2014
Full Text: View/download PDF

17. Detecting swift heavy ion irradiation effects with graphene

Author: S. Akcöltekin, Marika Schleberger, Oliver Ochedowski, Henning Lebius, B. Ban-d‘Etat, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Materials science, Analytical chemistry, FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, law.invention, Swift heavy ion, law, 0103 physical sciences, Irradiation, Graphite, 010306 general physics, Instrumentation, Condensed Matter - Materials Science, Graphene, Atomic force microscopy, Materials Science (cond-mat.mtrl-sci), Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Ion fluence, Exfoliation joint, Single layer graphene, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Atomic physics, 0210 nano-technology
Abstract: In this paper we show how single layer graphene can be utilized to study swift heavy ion (SHI) modifications on various substrates. The samples were prepared by mechanical exfoliation of bulk graphite onto SrTiO$_3$, NaCl and Si(111), respectively. SHI irradiations were performed under glancing angles of incidence and the samples were analysed by means of atomic force microscopy in ambient conditions. We show that graphene can be used to check whether the irradiation was successful or not, to determine the nominal ion fluence and to locally mark SHI impacts. In case of samples prepared in situ, graphene is shown to be able to catch material which would otherwise escape from the surface., 10 pages, 3 figures
Published: 2013
Full Text: View/download PDF

18. An innovative experimental setup for the measurement of sputtering yield induced by keV energy ions

Author: P. Salou, Abdenacer Benyagoub, T. Langlinay, B. Ban-d’Etat, D. Lelièvre, Henning Lebius, Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Auger electron spectroscopy, Materials science, Ultra-high vacuum, chemistry.chemical_element, 02 engineering and technology, Tungsten, 021001 nanoscience & nanotechnology, 01 natural sciences, 010305 fluids & plasmas, Highly oriented pyrolytic graphite, chemistry, Sputtering, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Graphite, Irradiation, Atomic physics, 0210 nano-technology, Instrumentation, Beam (structure)
Abstract: International audience; An innovative experimental equipment allowing to study the sputtering induced by ion beam irradiation is presented. The sputtered particles are collected on a catcher which is analyzed in situ by Auger electron spectroscopy without breaking the ultra high vacuum (less than 10−9 mbar), avoiding thus any problem linked to possible contamination. This method allows to measure the angular distribution of sputtering yield. It is now possible to study the sputtering of many elements such as carbon based materials. Preliminary results are presented in the case of highly oriented pyrolytic graphite and tungsten irradiated by an Ar+ beam at 2.8 keV and 7 keV, respectively.
Published: 2013
Full Text: View/download PDF

19. The Neutrons For Science facility at SPIRAL-2

Author: Julien Taieb, T. Materna, A. Chatillon, I. Thfoin, L. Perrot, Stanislav Simakov, T. Caillaud, X. Ledoux, Eric Bauge, A. Takibayev, Eva Simeckova, Andreas Oberstedt, Cecilia Gustavsson, B. Jacquot, Jan Novák, Danas Ridikas, A. G. Smith, G. Rudolf, B. Ban-d'Etat, Marilena Avrigeanu, D. Dore, V. Blideanu, J.M. Ramillon, C. Borcea, A. Klix, F. Gunsing, L. Giot, F. Farget, G. Bélier, I. Tsekhanovich, Diego Tarrio, J. C. Sublet, S. Czajkowski, Stephan Pomp, Olivier Serot, Beatriz Jurado, S. Bouffard, Muriel Fallot, G. Ban, O. Landoas, P. Dessagne, Stephan Oberstedt, J. Mrazek, François-René Lecolley, S. Guillous, Mitja Majerle, C. Varignon, S. Panebianco, Emmanuel Balanzat, Vlad Avrigeanu, M. Kerveno, Kaj Jansson, J.L. Lecouey, L. Audouin, B. Rossé, L. Tassan-Got, M. Aïche, T. Granier, G. Barreau, F. Negoita, Ulrich Fischer, Nathalie Marie, Pavel Bem, A. J. M. Plompen, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, High intensity, Nuclear Theory, Nuclear data, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Ion, Nuclear physics, Component (UML), Physics::Accelerator Physics, Neutron, Spiral (railway), Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract: The Neutrons For Science (NFS) facility is a component of SPIRAL-2 laboratory under construction at Caen (France). SPIRAL-2 is dedicated to the production of high intensity Radioactive Ions Beams (RIB). It is based on a high-power linear accelerator (LINAG) to accelerate deuterons beams in order to produce neutrons by breakup reactions on a C converter. These neutrons will induce fission in 238U for production of radioactive isotopes. Additionally to the RIB production, the proton and deuteron beams delivered by the accelerator will be used in the NFS facility. NFS is composed of a pulsed neutron beam and irradiation stations for cross-section measurements and material studies. The beams delivered by the LINAG will allow producing intense neutron beams in the 100 keV-40 MeV energy range with either a continuous or quasi-mono-energetic spectrum. At NFS available average fluxes will be up to 2 orders of magnitude higher than those of other existing time-of-flight facilities in the 1 MeV - 40 MeV range. NFS will be a very powerful tool for fundamental physics and application related research in support of the transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors. The facility and its characteristics are described, and several examples of the first potential experiments are presented., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards
Published: 2013
Full Text: View/download PDF

20. SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence - Application to luminescence degradation of a fast plastic scintillator

Author: F. Ropars, Amine Cassimi, T. Madi, B. Ban-d’Etat, Isabelle Monnet, Jean Marc Ramillon, Clara Grygiel, Emmanuel Balanzat, Henning Lebius, Emmanuel Gardés, F. Durantel, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Time-resolved spectroscopy, Nuclear and High Energy Physics, Materials science, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, [SDE.MCG]Environmental Sciences/Global Changes, FOS: Physical sciences, 02 engineering and technology, Ion-beam induced luminescence, Scintillator, 01 natural sciences, Ion, Swift heavy ion irradiation, Swift heavy ion, 0103 physical sciences, [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology, Stopping power (particle radiation), Irradiation, Instrumentation, Quenching, Radiation hardness, Plastic scintillator, Scintillation, Condensed Matter - Materials Science, 010308 nuclear & particles physics, Radiochemistry, Materials Science (cond-mat.mtrl-sci), Instrumentation and Detectors (physics.ins-det), 021001 nanoscience & nanotechnology, Atomic physics, 0210 nano-technology, Luminescence
Abstract: We developed a new sub-nanosecond time-resolved instrument to study the dynamics of UV-visible luminescence under high stopping power heavy ion irradiation. We applied our instrument, called SPORT, on a fast plastic scintillator (BC-400) irradiated with 27-MeV Ar ions having high mean electronic stopping power of 2.6 MeV/\mu m. As a consequence of increasing permanent radiation damages with increasing ion fluence, our investigations reveal a degradation of scintillation intensity together with, thanks to the time-resolved measurement, a decrease in the decay constant of the scintillator. This combination indicates that luminescence degradation processes by both dynamic and static quenching, the latter mechanism being predominant. Under such high density excitation, the scintillation deterioration of BC-400 is significantly enhanced compared to that observed in previous investigations, mainly performed using light ions. The observed non-linear behaviour implies that the dose at which luminescence starts deteriorating is not independent on particles' stopping power, thus illustrating that the radiation hardness of plastic scintillators can be strongly weakened under high excitation density in heavy ion environments., Comment: 5 figures, accepted in Nucl. Instrum. Methods B
Published: 2013
Full Text: View/download PDF

21. Damage in graphene due to electronic excitation induced by highly charged ions

Author: Johannes Hopster, Marika Schleberger, Henning Lebius, S. Guillous, Roland Kozubek, B. Ban-d'Etat, Fachbereich Physik [Duisburg], Universität Duisburg-Essen [Essen], Matériaux, Défauts et IRradiations (MADIR), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), Universität Duisburg-Essen = University of Duisburg-Essen [Essen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, FOS: Physical sciences, 02 engineering and technology, Kinetic energy, 01 natural sciences, Molecular physics, law.invention, Ion, law, Phase (matter), 0103 physical sciences, General Materials Science, Irradiation, 010306 general physics, Condensed Matter - Materials Science, Graphene, Projectile, Mechanical Engineering, Materials Science (cond-mat.mtrl-sci), Charge (physics), General Chemistry, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Mechanics of Materials, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, Excitation
Abstract: International audience; Graphene is expected to be rather insensitive to ion irradiation. We demonstrate that single layers of exfoliated graphene sustain significant damage from irradiation with slow highly charged ions. We have investigated the ion induced changes of graphene after irradiation with highly charged ions of different charge states (q = 28–42) and kinetic energies (Ekin = 150–450 keV). Atomic force microscopy images reveal that the ion induced defects are not topographic in nature but are related to a significant change in friction. To create these defects, a minimum charge state is needed. In addition to this threshold behaviour, the required minimum charge state as well as the defect diameter show a strong dependency on the kinetic energy of the projectiles. From the linear dependency of the defect diameter on the projectile velocity we infer that electronic excitations triggered by the incoming ion in the above-surface phase play a dominant role for this unexpected defect creation in graphene.
Published: 2013
Full Text: View/download PDF

22. Electronic sputtering of LiF by Krypton (10 MeV/u): size dependent energy distributions of Li+(LiF)n clusters

Author: B. Ban-d'Etat, J.M. Ramillon, Hussein Hijazi, Philippe Boduch, E. F. da Silveira, T. Langlinay, L. S. Farenzena, T. Been, I. Alzaher, Amine Cassimi, F. Ropars, Henning Lebius, Hermann Rothard, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Pontifical Catholic University of Rio de Janeiro (PUC), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)
Subjects: Materials science, Krypton, [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], chemistry.chemical_element, 01 natural sciences, 7. Clean energy, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Ion, chemistry, Sputtering, 0103 physical sciences, Thermal, Cluster (physics), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Atomic physics, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, Ejecta, Spectroscopy, Energy (signal processing), ComputingMilieux_MISCELLANEOUS
Abstract: A combination of imaging techniques (XY) and time-of-flight (TOF) spectroscopy was used to measure the complete velocity vector of sputtered positive secondary ions in collisions of Kr33+ (10.1 MeV/u) with well-prepared LiF single crystals in the electronic stopping regime. The energy distributions N(E) of the cluster ions (LiF) n Li+ (n ≥ 0) depend on the size of the ejecta: the maximum is slightly shifted towards lower energy with increasing cluster size n. The measured energy distributions of emitted cluster ions can be fitted by a Maxwell-Boltzmann function N(E) = AEexp(−βE). This could be an indication that the processes generating the sputtering are compatible with a thermal origin.
Published: 2012
Full Text: View/download PDF

23. Electronic sputtering: angular distributions of (LiF)nLi+ clusters emitted in collisions of Kr (10.1 MeV/u) with LiF single crystals

Author: J.M. Ramillon, Amine Cassimi, F. Ropars, Hermann Rothard, T. Been, Henning Lebius, Hussein Hijazi, Philippe Boduch, E. F. da Silveira, L. S. Farenzena, I. Alzaher, B. Ban-d'Etat, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Departamento de Física [Universidade Federal de Santa Catarina], Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] (UFSC), Pontifícia Universidade Católica, Departamento de Física (PUC), Pontifícia Universidade Católica, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Lebius, Henning
Subjects: Physics, Jet (fluid), SIMPLE (dark matter experiment), Ion beam, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Ion, Sputtering, 0103 physical sciences, Cluster (physics), Perpendicular, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Atomic physics, 010306 general physics, 0210 nano-technology, Spectroscopy, ComputingMilieux_MISCELLANEOUS
Abstract: A combination of imaging techniques (XY) and time-of-flight (TOF) spectroscopy was used to measure the complete velocity vector of sputtered positive secondary ions in collisions of Kr33+ (10.1 MeV/u) with well prepared LiF single crystals in the electronic stopping regime. The angular distributions of (LiF) n Li+ clusters become broader with increasing cluster size n. This could be an indication of contributions from different ejection mechanisms. The experimental secondary ion angular distributions can be fitted by a simple cosine function of the type N(θ) = A cos m (θ), but it does not reproduce the shape of the jet-like structure observed for the emission of neutral LiF particles perpendicular to the ion beam. Therefore, the cluster emission hypothesis does not explain in a simple way the observed narrow jet.
Published: 2012

24. The Neutrons for Science Facility at SPIRAL‐2

Author: X. Ledoux, M. Aïche, M. Avrigeanu, V. Avrigeanu, L. Audouin, E. Balanzat, B. Ban-d'Etat, G. Ban, G. Barreau, E. Bauge, G. Bélier, P. Bem, V. Blideanu, J. Blomgren, C. Borcea, S. Bouffard, T. Caillaud, A. Chatillon, S. Czajkowski, P. Dessagne, D. Doré, M. Fallot, F. Farget, U. Fischer, L. Giot, T. Granier, S. Guillous, F. Gunsing, C. Gustavsson, S. Herber, B. Jacquot, B. Jurado, M. Kerveno, A. Klix, O. Landoas, F. R. Lecolley, J. F. Lecolley, J. L. Lecouey, M. Majerle, N. Marie, T. Materna, J. Mrazek, F. Negoita, J. Novak, S. Oberstedt, A. Oberstedt, S. Panebianco, L. Perrot, M. Petrascu, A. J. M. Plompen, S. Pomp, J. M. Ramillon, D. Ridikas, B. Rossé, G. Rudolf, O. Serot, O. Shcherbakov, S. P. Simakov, E. Simeckova, A. G. Smith, J. C. Steckmeyer, J. C. Sublet, J. Taïeb, L. Tassan-Got, A. Takibayev, E. Tungborn, I. Thfoin, I. Tsekhanovich, C. Varignon, J. P. Wieleczko, Marianne E. Hamm, Robert W. Hamm, 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), Aval du cycle et Energie Nucléaire (ACEN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear transmutation, 010308 nuclear & particles physics, Fission, Nuclear Theory, Radioactive waste, Neutron radiation, Fusion power, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Linear particle accelerator, Nuclear physics, 0103 physical sciences, Physics::Accelerator Physics, Spallation, Neutron, 010306 general physics, Nuclear Experiment, Computer Science::Operating Systems
Abstract: International audience; The "Neutrons for Science" (NFS) facility will be a component of SPIRAL‐2, the future accelerator dedicated to the production of very intense radioactive ion beams, under construction at GANIL in Caen (France). NFS will be composed of a pulsed neutron beam for in‐flight measurements and irradiation stations for cross‐section measurements and material studies. Continuous and quasi‐monokinetic energy spectra will be available at NFS respectively produced by the interaction of deuteron beam on thick a Be converter and by the 7Li(p,n) reaction on a thin converter. The flux at NFS will be up to 2 orders of magnitude higher than those of other existing time‐of‐flight facilities in the 1 MeV to 40 MeV range. NFS will be a very powerful tool for physics and fundamental research as well as applications like the transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors.
Published: 2011
Full Text: View/download PDF

25. Projectile charge and velocity effect on U$O_2$ sputtering in the nuclear stopping regime

Author: Hermann Rothard, F. Haranger, Ph. Boduch, S. Bouffard, Henning Lebius, L. Maunoury, B. Ban-d’Etat, Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), and Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Ion radiation effects, Physics::Instrumentation and Detectors, Projectile, Astrophysics::High Energy Astrophysical Phenomena, Atomic molecular and ion beam impact and interactions with surfaces, Charge (physics), Plasma, Kinetic energy, 7. Clean energy, 01 natural sciences, Potential energy, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Ion, Other topics in atomic and molecular collision processes and interactions, Sputtering, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], 0103 physical sciences, 34.90.+q, 61.80.Jh, 79.20.Rf, Collision cascade, Atomic physics, 010306 general physics
Abstract: Angular distributions and yields of uranium sputtered by slow highly charged Xeq+ ions (kinetic energy $1.5~{\rm keV}\le E_{k}\le 81$ keV, charge state 1≤q≤25) from UO2 were measured by means of the catcher technique. A charge state effect on the sputtering process is observed at 8 and 81 keV. A deviation from a Acosθ shape (the linear collision cascade theory) is observed in case of Xeq+ impinging a UO2 surface at Ek=8 keV. Yields increase linearly with projectile charge state q thus clearly revealing the contribution of potential energy to the sputtering process. In addition, as the kinetic energy of a Xe10+ projectile decreases from 81 keV to 1.5 keV, a velocity effect is clearly observed on the angular distribution.
Published: 2006
Full Text: View/download PDF

26. Potential and Kinetic Sputtering of UO2 by Slow Highly Charged Ions

Author: B. Ban-d'Etat, F. Haranger, Ph. Boduch, S. Bouffard, H. Lebius, L. Maunoury, J. Y. Pacquet, H. Rothard, C. Clerc, F. Garrido, L. Thom�, R. Hellhammer, Z. Pe?i?, and N. Stolterfoht
Subjects: Materials science, Yield (engineering), Physics::Instrumentation and Detectors, Projectile, chemistry.chemical_element, Condensed Matter Physics, Kinetic energy, Potential energy, Atomic and Molecular Physics, and Optics, Ion, Xenon, chemistry, Sputtering, Atomic physics, Nuclear Experiment, Mathematical Physics, Beam (structure)
Abstract: First measurements of angular distributions of Uranium dioxide (UO2) sputtering induced by slow highly charged Xenon ions (81 keV, v < 0.16 a.u.) have been performed using a catcher technique. The angular distributions are found to be non-isotropic. A clear projectile charge state effect on the sputtering process is observed. From the angular distributions, the total sputtering yield can be deduced. It increases with the projectile potential energy. Varying the projectile incidence angle from 0° with respect to the surface normal to 60°, the sputtering yield increases in the beam forward direction. The projectile charge effect on the angular distribution becomes less prominent at 60° than at 0°. In addition, angular sputtering distributions were studied with Xe25+ at 8 keV (v < 0.02 a.u.), where the potential and kinetic energies of the projectile are equal.
Published: 2004
Full Text: View/download PDF

27. Swift heavy ion track formation in SrTiO3 and TiO2 under random, channeling and near-channeling conditions.

Author: M Karlušić, M Jakšić, H Lebius, B Ban-d'Etat, R A Wilhelm, R Heller, and M Schleberger
Subjects: HEAVY ions, RUTHERFORD backscattering spectrometry, PARTICLE tracks (Nuclear physics)
Abstract: Conditions for ion track formation in single crystal SrTiO3 and TiO2 (rutile) after irradiations using swift heavy ion beams with specific energies below 1 MeV/amu were investigated in this work. Rutherford backscattering spectroscopy in channeling was used to measure ion tracks in the bulk, while atomic force microscopy was used for observation of ion tracks on the surfaces. Variations in the ion track sizes and respective thresholds were observed after irradiations under random, channeling and near-channeling conditions close to normal incidence. These variations are attributed to the specifics of the electronic stopping power of swift heavy ions under the investigated conditions. In the case of ion channeling, electronic stopping power is reduced and observed ion tracks are smaller. The opposite was found under the near-channeling conditions when lowering of the ion track formation threshold was observed. We attribute this finding to the oscillating electronic stopping power with large peak values. For both materials, thresholds for bulk and surface ion track formation were found to be surprisingly close, around 10 keV nm−1. Obtained results are compared with predictions of the analytical thermal spike model. [ABSTRACT FROM AUTHOR]
Published: 2017
Full Text: View/download PDF

28. Nanostructuring graphene by dense electronic excitation.

Author: O Ochedowski, O Lehtinen, U Kaiser, A Turchanin, B Ban-d’Etat, H Lebius, M Karlušić, M Jakšić, and M Schleberger
Subjects: GRAPHENE, HEAVY ions, NANOSTRUCTURED materials, NANOTECHNOLOGY, ELECTRONIC excitation
Abstract: The ability to manufacture tailored graphene nanostructures is a key factor to fully exploit its enormous technological potential. We have investigated nanostructures created in graphene by swift heavy ion induced folding. For our experiments, single layers of graphene exfoliated on various substrates and freestanding graphene have been irradiated and analyzed by atomic force and high resolution transmission electron microscopy as well as Raman spectroscopy. We show that the dense electronic excitation in the wake of the traversing ion yields characteristic nanostructures each of which may be fabricated by choosing the proper irradiation conditions. These nanostructures include unique morphologies such as closed bilayer edges with a given chirality or nanopores within supported as well as freestanding graphene. The length and orientation of the nanopore, and thus of the associated closed bilayer edge, may be simply controlled by the direction of the incoming ion beam. In freestanding graphene, swift heavy ion irradiation induces extremely small openings, offering the possibility to perforate graphene membranes in a controlled way. [ABSTRACT FROM AUTHOR]
Published: 2015
Full Text: View/download PDF

29. Response of GaN to energetic ion irradiation: conditions for ion track formation.

Author: M Karlušić, R Kozubek, H Lebius, B Ban-d’Etat, R A Wilhelm, M Buljan, Z Siketić, F Scholz, T Meisch, M Jakšić, S Bernstorff, M Schleberger, and B Šantić
Subjects: GALLIUM nitride, IRRADIATION, IONS, X-ray scattering, ELASTIC recoil detection analysis
Abstract: We investigated the response of wurzite GaN thin films to energetic ion irradiation. Both swift heavy ions (92 MeV Xe23+, 23 MeV I6+) and highly charged ions (100 keV Xe40+) were used. After irradiation, the samples were investigated using atomic force microscopy, grazing incidence small angle x-ray scattering, Rutherford backscattering spectroscopy in channelling orientation and time of flight elastic recoil detection analysis. Only grazing incidence swift heavy ion irradiation induced changes on the surface of the GaN, when the appearance of nanoholes is accompanied by a notable loss of nitrogen. The results are discussed in the framework of the thermal spike model. [ABSTRACT FROM AUTHOR]
Published: 2015
Full Text: View/download PDF

30. Highly active single-layer MoS 2 catalysts synthesized by swift heavy ion irradiation.

Author: Madauß L, Zegkinoglou I, Vázquez Muiños H, Choi YW, Kunze S, Zhao MQ, Naylor CH, Ernst P, Pollmann E, Ochedowski O, Lebius H, Benyagoub A, Ban-d'Etat B, Johnson ATC, Djurabekova F, Roldan Cuenya B, and Schleberger M
Abstract: Two-dimensional molybdenum-disulfide (MoS2) catalysts can achieve high catalytic activity for the hydrogen evolution reaction upon appropriate modification of their surface. The intrinsic inertness of the compound's basal planes can be overcome by either increasing the number of catalytically active edge sites or by enhancing the activity of the basal planes via a controlled creation of sulfur vacancies. Here, we report a novel method of activating the MoS2 surface using swift heavy ion irradiation. The creation of nanometer-scale structures by an ion beam, in combination with the partial sulfur depletion of the basal planes, leads to a large increase of the number of low-coordinated Mo atoms, which can form bonds with adsorbing species. This results in a decreased onset potential for hydrogen evolution, as well as in a significant enhancement of the electrochemical current density by over 160% as compared to an identical but non-irradiated MoS2 surface.
Published: 2018
Full Text: View/download PDF

31. The Neutrons for Science Facility at SPIRAL-2.

Author: Ledoux X, Aïche M, Avrigeanu M, Avrigeanu V, Balanzat E, Ban-d'Etat B, Ban G, Bauge E, Bélier G, Bém P, Borcea C, Caillaud T, Chatillon A, Czajkowski S, Dessagne P, Doré D, Fischer U, Frégeau MO, Grinyer J, Guillous S, Gunsing F, Gustavsson C, Henning G, Jacquot B, Jansson K, Jurado B, Kerveno M, Klix A, Landoas O, Lecolley FR, Lecouey JL, Majerle M, Marie N, Materna T, Mrázek J, Novák J, Oberstedt S, Oberstedt A, Panebianco S, Perrot L, Plompen AJM, Pomp S, Prokofiev AV, Ramillon JM, Farget F, Ridikas D, Rossé B, Serot O, Simakov SP, Šimecková E, Stanoiu M, Štefánik M, Sublet JC, Taïeb J, Tarrío D, Tassan-Got L, Thfoin I, and Varignon C
Subjects: Computer Simulation, Radiation Dosage, Deuterium analysis, Equipment Design, Lithium chemistry, Neutrons, Particle Accelerators instrumentation, Protons
Abstract: The neutrons for science (NFS) facility is a component of SPIRAL-2, the new superconducting linear accelerator built at GANIL in Caen (France). The proton and deuteron beams delivered by the accelerator will allow producing intense neutron fields in the 100 keV-40 MeV energy range. Continuous and quasi-mono-kinetic energy spectra, respectively, will be available at NFS, produced by the interaction of a deuteron beam on a thick Be converter and by the 7Li(p,n) reaction on thin converter. The pulsed neutron beam, with a flux up to two orders of magnitude higher than those of other existing time-of-flight facilities, will open new opportunities of experiments in fundamental research as well as in nuclear data measurements. In addition to the neutron beam, irradiation stations for neutron-, proton- and deuteron-induced reactions will be available for cross-sections measurements and for the irradiation of electronic devices or biological cells. NFS, whose first experiment is foreseen in 2018, will be a very powerful tool for physics, fundamental research as well as applications like the transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors.
Published: 2018
Full Text: View/download PDF

32. High resolution AFM studies of irradiated mica-following the traces of swift heavy ions under grazing incidence.

Author: Gruber E, Bergen L, Salou P, Lattouf E, Grygiel C, Wang Y, Benyagoub A, Levavasseur D, Rangama J, Lebius H, Ban-d'Etat B, Schleberger M, and Aumayr F
Abstract: High resolution AFM imaging of swift heavy ion irradiated muscovite mica under grazing incidence provides detailed insight into the created nanostructure features. Swift heavy ions under grazing incidence form a complex track structure along the surface, which consists of a double track of nanohillocks at the impact site accompanied by a single, several 100 nm long protrusion. Detailed track studies by varying the irradiation parameters, i.e. the angle of incidence (0.2°-2°) and the kinetic energy of the impinging ions (23, 55, 75, 95 MeV) are presented. Moreover, the track formation in dependence of the sample temperature (between room temperature and 600 °C) and of the chemical composition (muscovite mica and fluorphlogopite mica) is studied.
Published: 2018
Full Text: View/download PDF

33. Fabrication of nanoporous graphene/polymer composite membranes.

Author: Madauß L, Schumacher J, Ghosh M, Ochedowski O, Meyer J, Lebius H, Ban-d'Etat B, Toimil-Molares ME, Trautmann C, Lammertink RGH, Ulbricht M, and Schleberger M
Abstract: Graphene is currently investigated as a promising membrane material in which selective pores can be created depending on the requirements of the application. However, to handle large-area nanoporous graphene a stable support material is needed. Here, we report on composite membranes consisting of large-area single layer nanoporous graphene supported by a porous polymer. The fabrication is based on ion-track nanotechnology with swift heavy ions directly creating atomic pores in the graphene lattice and damaged tracks in the polymer support. Subsequent chemical etching converts the latent ion tracks in the supporting polymer foil, here polyethylene terephthalate (PET), into open microchannels while the perfectly aligned pores in the graphene top layer remain unaffected. To avoid unintentional damage creation and delamination of the graphene layer from the substrate, the graphene is encapsulated by a protecting poly(methyl methacrylate) (PMMA) layer. By this procedure a stable composite membrane is obtained consisting of nanoporous graphene (coverage close to 100%) suspended across selfaligned track-etched microchannels in a polymer support film. Our method presents a facile way to create high quality suspended graphene of tunable pore size supported on a flexible porous polymeric support, thus enabling the development of membranes for fast and selective ultrafiltration separation processes.
Published: 2017
Full Text: View/download PDF

34. Swift heavy ion irradiation of CaF2 - from grooves to hillocks in a single ion track.

Author: Gruber E, Salou P, Bergen L, El Kharrazi M, Lattouf E, Grygiel C, Wang Y, Benyagoub A, Levavasseur D, Rangama J, Lebius H, Ban-d'Etat B, Schleberger M, and Aumayr F
Abstract: A novel form of ion-tracks, namely nanogrooves and hillocks, are observed on CaF2 after irradiation with xenon and lead ions of about 100 MeV kinetic energy. The irradiation is performed under grazing incidence (0.3°-3°) which forces the track to a region in close vicinity to the surface. Atomic force microscopy imaging of the impact sites with high spatial resolution reveals that the surface track consists in fact of three distinct parts: each swift heavy ion impacting on the CaF2 surface first opens a several 100 nm long groove bordered by a series of nanohillocks on both sides. The end of the groove is marked by a huge single hillock and the further penetration of the swift projectile into deeper layers of the target is accompanied by a single protrusion of several 100 nm in length slowly fading until the track vanishes. By comparing experimental data for various impact angles with results of a simulation, based on a three-dimensional version of the two-temperature-model (TTM), we are able to link the crater and hillock formation to sublimation and melting processes of CaF2 due to the local energy deposition by swift heavy ions.
Published: 2016
Full Text: View/download PDF

35. Nanostructuring graphene by dense electronic excitation.

Author: Ochedowski O, Lehtinen O, Kaiser U, Turchanin A, Ban-d'Etat B, Lebius H, Karlušić M, Jakšić M, and M Schleberger
Abstract: The ability to manufacture tailored graphene nanostructures is a key factor to fully exploit its enormous technological potential. We have investigated nanostructures created in graphene by swift heavy ion induced folding. For our experiments, single layers of graphene exfoliated on various substrates and freestanding graphene have been irradiated and analyzed by atomic force and high resolution transmission electron microscopy as well as Raman spectroscopy. We show that the dense electronic excitation in the wake of the traversing ion yields characteristic nanostructures each of which may be fabricated by choosing the proper irradiation conditions. These nanostructures include unique morphologies such as closed bilayer edges with a given chirality or nanopores within supported as well as freestanding graphene. The length and orientation of the nanopore, and thus of the associated closed bilayer edge, may be simply controlled by the direction of the incoming ion beam. In freestanding graphene, swift heavy ion irradiation induces extremely small openings, offering the possibility to perforate graphene membranes in a controlled way.
Published: 2015
Full Text: View/download PDF

36. Graphitic nanostripes in silicon carbide surfaces created by swift heavy ion irradiation.

Author: Ochedowski O, Osmani O, Schade M, Bussmann BK, Ban-d'Etat B, Lebius H, and Schleberger M
Abstract: The controlled creation of defects in silicon carbide represents a major challenge. A well-known and efficient tool for defect creation in dielectric materials is the irradiation with swift (E(kin) ≥ 500 keV/amu) heavy ions, which deposit a significant amount of their kinetic energy into the electronic system. However, in the case of silicon carbide, a significant defect creation by individual ions could hitherto not be achieved. Here we present experimental evidence that silicon carbide surfaces can be modified by individual swift heavy ions with an energy well below the proposed threshold if the irradiation takes place under oblique angles. Depending on the angle of incidence, these grooves can span several hundreds of nanometres. We show that our experimental data are fully compatible with the assumption that each ion induces the sublimation of silicon atoms along its trajectory, resulting in narrow graphitic grooves in the silicon carbide matrix.
Published: 2014
Full Text: View/download PDF

37. An innovative experimental setup for the measurement of sputtering yield induced by keV energy ions.

Author: Salou P, Lebius H, Benyagoub A, Langlinay T, Lelièvre D, and Ban-d'Etat B
Abstract: An innovative experimental equipment allowing to study the sputtering induced by ion beam irradiation is presented. The sputtered particles are collected on a catcher which is analyzed in situ by Auger electron spectroscopy without breaking the ultra high vacuum (less than 10(-9) mbar), avoiding thus any problem linked to possible contamination. This method allows to measure the angular distribution of sputtering yield. It is now possible to study the sputtering of many elements such as carbon based materials. Preliminary results are presented in the case of highly oriented pyrolytic graphite and tungsten irradiated by an Ar(+) beam at 2.8 keV and 7 keV, respectively.
Published: 2013
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

37 results on '"B. Ban-d'Etat"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources