Single- and double-electron detachment from H- in collisions with He

被引：16
|
作者：
Vikor, L
Sarkadi, L
Penent, F
Bader, A
Palinkas, J
机构：
[1] LAJOS KOSSUTH UNIV, DEPT EXPT PHYS, DEBRECEN, HUNGARY
[2] UNIV PARIS 06, LAB DYNAM MOL & ATOM, F-05 PARIS, FRANCE
来源：
PHYSICAL REVIEW A | 1996年 / 54卷 / 03期
关键词：
D O I：
10.1103/PhysRevA.54.2161
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The single- and double-electron detachment processes have been studied for 85 keV H- on He collisions measuring the energy spectra of the electrons emitted in forward direction. In the spectrum belonging to the single-electron loss (SEL) the nonresonant part (cusp) has been resolved from the resonant part [lines from the (2s2p)P-1(o) shape resonance of H-]. The ratio of the integrated yield of the double-electron loss (DEL) to that of SEL was found to be 0.36+/-0.02. The yield of the cusp in the SEL spectrum was found to be surprisingly small, only (70+/-20)% of the yield of the cusp in the DEL spectrum. The formation of the cusp in SEL is interpreted as a result of dipolar interaction between the electron and the outgoing H-o atom.
引用
收藏
页码：2161 / 2168
页数：8
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