ELECTRON-EMISSION FROM METAL-SURFACES BOMBARDED BY SLOW NEUTRAL AND IONIZED PARTICLES

被引：28

作者：

LAKITS, G

WINTER, H

机构：

[1] Institut für Allgemeine Physik, Technische Universität Wien, A-1040 Wien

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1990年 / 48卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(90)90191-V

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Slow (E ≤5 keV/amu) particle-induced electron emission from clean polycrystalline gold has been investigated based on measurements of electron statistics. The latter were found to deviate considerably from commonly assumed simple statistical functions, in particular Poisson distributions. Bombardment with respectively hydrogen atoms, protons and molecular hydrogen ions (E ≤ 5 keV/amu) showed a clear correlation of the electron emission yield with the number of electrons per proton in the projectile, from which observed "molecular effects" can be explained. Furthermore, bombardment with respectively neutral and singly and multiply charged noble gas ions of He, Ne and Ar was applied to separate contributions by potential and kinetic emission processes. This can only be achieved below certain impact energy limits, which have been determined in the present study. © 1990.

引用

页码：597 / 603

页数：7

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