DOUBLE IONIZATION OF HELIUM BY FAST ELECTRONS - USE OF CORRELATED 2 ELECTRON WAVE-FUNCTIONS

被引：74

作者：

JOULAKIAN, B ^{[1
]}

DALCAPPELLO, C ^{[1
]}

BRAUNER, M ^{[1
]}

机构：

[1] UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1992年 / 25卷 / 12期

关键词：

D O I：

10.1088/0953-4075/25/12/014

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The mechanism for the simultaneous escape of two equivalent electrons from a noble gas atom is strongly related to interelectronic correlation. It is therefore necessary to use correlated wavefunctions to describe the system in its initial and final states. As a first step towards the study of other noble gases, the double ionization of the helium atom by fast electrons is studied in a first Born approximation approach by applying Hylleraas-type functions for the initial state and a correlated double-continuum wavefunction which satisfies the exact asymptotic boundary conditions for the final state of the two slow electrons.

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页码：2863 / 2871

页数：9

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