Energy distribution of H+ ions desorbed from metal surfaces by MeV ion impact

被引：10
作者：
de Castro, CC
Bitensky, IS
da Silveira, EF
Most, M
Wien, K
机构：
[1] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22452970 Rio De Janeiro, Brazil
[2] TH Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 1998年 / 173卷 / 1-2期
关键词：
H+ desorption; H+ energy distribution; time-of-flight; PDMS;
D O I：
10.1016/S0168-1176(97)00276-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Energy distributions of desorbed H+ ions from different solid surfaces (Au, Ni, Ti, Nb, V, Ta, C) under Cf-252 fission fragment bombardment are reported. The surfaces were exposed to distinct hydrogen containing gases (CH4, H-2 or D2O) throughout the measurements. Energy distributions were obtained by the double-grid time-of-flight method. Experimental results show that H+ energy distributions are rather insensitive to the substrates and gases investigated. A model based on desorption induced by secondary electrons escaping the ion track is developed. Energy distributions of emitted H+ ions have been calculated and compared with the present experimental data. Published by Elsevier Science B.V.
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页码：1 / 15
页数：15
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