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IONIZATION PROBABILITIES OF OXYGEN SPUTTERED FROM METAL-SURFACES

被引：34
作者：
BAHRIM, B
TEILLETBILLY, D
GAUYACQ, JP
机构：
[1] UNIV PARIS 11,COLLIS ATOM & MOLEC LAB,URA 281,CNRS,BATIMENT 351,F-91405 ORSAY,FRANCE
[2] ATOM PHYS INST,DEPT LASER,BUCAREST MAGURELE,ROMANIA
来源：
SURFACE SCIENCE | 1994年 / 316卷 / 1-2期
关键词：
D O I：
10.1016/0039-6028(94)91139-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The charge state of oxygen atoms sputtered from a metal surface is studied, using recent theoretical results on the O--Al surface. These were obtained with the coupled angular mode method and fully take into account the multielectron, multistate and polarization effects of the O--Al interaction. The O/O- ratio is determined for various velocities of the sputtered particles as a function of the metal surface workfunction. The O- fraction is found to vary very rapidly with the surface workfunction. A strong polarization effect is also observed, i.e. the O- survival probability strongly depends on its polarization (M(L) = 0 or +/- 1). The results are found in very good agreement with the experimental results of Yu (1981) on O- ions sputtered from O and alkali covered V and Nb surfaces.
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收藏
页码：189 / 197
页数：9
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