2006年6月
Nonadditivity of convoy- and secondary-electron yields in the forward-electron emission from thin carbon foils under irradiation of fast carbon-cluster ions
PHYSICAL REVIEW A
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- 巻
- 73
- 号
- 6
- 開始ページ
- 060901
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1103/PhysRevA.73.060901
- 出版者・発行元
- AMERICAN PHYSICAL SOC
We have measured energy spectra of secondary electrons produced by fast-carbon-cluster C-n (+) (n=1-4) bombardment of thin carbon foils (3.2, 7.3, 11.9, and 20.3 mu g/cm(2)). For clusters of identical velocity, the convoy-electron yield is enhanced with increasing cluster size n, while the yield of secondary electrons is reduced. The yield of convoy electrons normalized to the number of injected atoms increases proportionally with cluster size n. This proportionality suggests that there is only a weak vicinage effect on the number of primary electrons scattered by the projectile. The vicinage effect observed in low-energy secondary electrons must therefore arise from either transport or transmission through the surface.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevA.73.060901
- ISSN : 1050-2947
- CiNii Articles ID : 120001870264
- Web of Science ID : WOS:000238694900006