Asymmetry parameters and differential cross sections for photoionization-excitation of helium

被引：0

作者：

Jiang, YH ^{[1
]}

Sun, JF ^{[1
]}

Zhu, ZL ^{[1
]}

Yang, QY ^{[1
]}

Wan, LD ^{[1
]}

机构：

[1] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453002, Peoples R China

来源：

CHINESE PHYSICS | 2000年 / 9卷 / 12期

关键词：

asymmetry parameter; differential cross sections; photoionization; R-matrix;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Asymmetry parameter beta (2) for photoionization of helium leaving the He+ ion in the n = 2 level and differential cross sections(DCSs) in the n = 2, 3, 4 levels with photon emission angle theta = 90 degrees are provided at photon energies 69 - 76.8eV employing the R-matrix method with a 20-term target representation, in which five polarization orbitals 6l are included. The asymmetry parameter beta (2) and the DCS, in the n = 2 level in the region of 69 - 73 eV, are in good agreement with available experimental and theoretical results. Above the n = 3 threshold, we present new theoretical results along with measurements. No theoretical and experimental results can be used to compare with the present calculations of the DCSs for photoionization into the He+ ion in the n = 3, 4 levels.

引用

页码：892 / 899

页数：8

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