DYNAMICS IN NEGATIVE-ION ELECTRON-STIMULATED DESORPTION FROM CONDENSED MOLECULES

被引：9

作者：

AZRIA, R ^{[1
]}

LECOAT, Y ^{[1
]}

MHARZI, B ^{[1
]}

TRONC, M ^{[1
]}

机构：

[1] UNIV PARIS 06,CHIM PHYS LAB,CNRS,URA 0176,F-75231 PARIS 05,FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 101卷 / 1-2期

关键词：

D O I：

10.1016/0168-583X(95)00051-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The knowledge of desorption dynamics is essential to identify the different reaction steps in negative ion electron stimulated desorption (ESD) from condensed molecules and to determine the importance of energy transfer at each step of this process. For this purpose we have developed an experimental set-up to measure the kinetic energy (KE) distribution of negative ions emerging from condensed molecules at different angles from the surface normal. We present results concerning O- ESD from condensed O, at low energy. The shape and energy positions of the KE distributions obtained clearly indicate that multiple electron scattering and post-dissociation interactions of O- ions as they receed from the solid cannot account alone for the observed spectra and that a strong interaction between the resonnance and the adsorbate must be invoked.

引用

页码：184 / 187

页数：4

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