Damage kinetics in MeV gold ion – Irradiated crystalline quartz
| Autor: | Stella M. M. Ramos, J. Chaumont, Marcel Toulemonde, Harry Bernas, C. Clerc, Bruno Canut |
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| Přispěvatelé: | Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Lorgeril, Jocelyne |
| Rok vydání: | 2000 |
| Předmět: |
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Nuclear and High Energy Physics Kinetics 02 engineering and technology 7. Clean energy 01 natural sciences Ion law.invention law libraries 0103 physical sciences Van de Graaff generator Stopping power (particle radiation) Irradiation 010306 general physics uses Instrumentation Quartz sociology Single ion Chemistry 021001 nanoscience & nanotechnology culture Atomic physics 0210 nano-technology Crystalline quartz |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2000, 166, pp.31-34 |
| ISSN: | 0168-583X |
| Popis: | Damage creation in crystalline α -quartz under gold irradiation was studied at 1.0 and 5.5 MeV using the ARAMIS accelerator at CSNSM (Orsay). Although at these energies the total stopping powers are nearly equal (respectively, 4.20 and 4.46 keV nm −1 ), the electronic stopping power is only 1.23 keV nm −1 (25% of the total) at 1 MeV while it reaches 2.75 keV nm −1 (62% of the total) at 5.5 MeV. The electronic stopping power threshold for damage creation in α -quartz is about 1.8 keV/nm [1] . The experiment thus allows us to follow the damage production kinetics due to nuclear collisions (at 1 MeV) versus electronic collisions (at 5.5 MeV). The damage was determined by channeling Rutherford backscattering (RBS-C) using the 2 MV Van de Graaff at DPM (Villeurbanne). Single ion impacts create damage when electronic stopping dominates, while several impacts are necessary to achieve complete damage when nuclear stopping dominates. Differences in damage efficiencies will be discussed. |
| Databáze: | OpenAIRE |
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