THRESHOLD OF ION-INDUCED KINETIC ELECTRON-EMISSION FROM A CLEAN METAL-SURFACE

被引：135
|
作者：
LAKITS, G
AUMAYR, F
HEIM, M
WINTER, H
机构：
[1] Institut für Allgemeine Physik, Technische Universität Wien, A-1040 Wien
来源：
PHYSICAL REVIEW A | 1990年 / 42卷 / 09期
关键词：
D O I：
10.1103/PhysRevA.42.5780
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Electron emission from clean gold under impact of H+ or singly charged rare-gas ions in their ground state has been investigated at the kinetic emission threshold, measuring both the emission statistics and total yields by means of counting techniques. As we are able to subtract any contribution from potential emission, we observe kinetic emission well below the threshold for sufficient energy transfer from projectiles onto quasifree metal electrons and relate this contribution to quasimolecular autoionization in close collisions between the neutralized projectiles and metal ion cores. © 1990 The American Physical Society.
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页码：5780 / 5783
页数：4
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