PHOTOEXCITATION AND IONIZATION IN HELIUM - ZERO-KINETIC-ENERGY SPECTROSCOPY

被引：6

作者：

FAN, Z ^{[1
]}

SADEGHPOUR, HR ^{[1
]}

DALGARNO, A ^{[1
]}

机构：

[1] HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA

来源：

PHYSICAL REVIEW A | 1994年 / 50卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.50.3174

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The cross sections for double and single photoexcitation and -ionization of helium are calculated in the acceleration gauge assuming a totally asymmetric energy and angular momentum partitioning between two electrons. The electron-electron correlation is taken, into account in the ground-state wave function. By extrapolating single-ionization differential oscillator strengths to n --> infinity, where n is the excited He+ principal quantum number, an estimate of the double-ionization cross sections is obtained. Comparison with other calculations is made.

引用

页码：3174 / 3180

页数：7

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