ON THE CONVERGENCE OF R-MATRIX CALCULATIONS FOR N = 2 EXCITATION OF HELIUM BY 29.6 EV ELECTRON

被引：10

作者：

FON, WC

LIM, KP

BERRINGTON, KA

机构：

[1] UNIV TEKNOL MARA, DEPT ENGN SCI, SHAH ALAM 4050, MALAYSIA

[2] QUEENS UNIV BELFAST, DEPT APPL MATH & THEORET PHYS, BELFAST BT7 1NN, ANTRIM, NORTH IRELAND

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1994年 / 27卷 / 17期

关键词：

D O I：

10.1088/0953-4075/27/17/005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The 29-state R-matrix calculation of Fon et al is now extended to electron impact energy 29.6 eV to obtain differential cross sections and electron-photon coincidence parameters lambda and \chi\ for the n = 2 excitation. The results of this calculation are shown to make significant improvement over the 19-state calculation of Fon et al in getting closer agreement with the latest experiments and the CCC calculation of Bray et al. The importance of the ionization continuum effects at 29.6 eV is examined in the context of convergence of the R-matrix calculations and in comparison with the new experiments and theories.

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收藏

页码：L591 / L595

页数：5

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