2015年10月
Energy-loss of He ions in carbon allotropes studied by elastic resonance in backscattering spectra
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
- ,
- 巻
- 360
- 号
- 開始ページ
- 16
- 終了ページ
- 22
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.nimb.2015.07.114
- 出版者・発行元
- ELSEVIER SCIENCE BV
Backscattering spectra for He-4 ions incident on carbon allotropes have been measured in the energy range from 4.30 to 4.95 MeV in steps of 50-100 keV at scattering angles of 106 degrees and 170 degrees. We used three carbon allotropes: graphite, diamond and amorphous carbon. For all these allotropes, we can observe the sharp (He-4, C-12) elastic nuclear resonance at the He ion energy of 4.265 MeV in the backscattering spectra. By varying the incident He energy, we have systematically analyzed the profiles of the resonance peaks to study the energy-loss processes: stopping cross-sections and energy-loss straggling around the interesting region of the stopping maximum at about 500 keV. We focus on the resonance profiles and investigate an allotropic effect concerning the energy-loss. Furthermore, an energy bunching effect on the straggling is presented and the mechanism is discussed. (C) 2015 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.nimb.2015.07.114
- ISSN : 0168-583X
- eISSN : 1872-9584
- Web of Science ID : WOS:000361859500003