USE OF THE VANREGEMORTER FORMULA FOR COLLISION STRENGTHS OR CROSS-SECTIONS

被引：37

作者：

SAMPSON, DH

ZHANG, HL

机构：

[1] Department of Astronomy and Astrophysics, Pennsylvania State University, University Park

来源：

PHYSICAL REVIEW A | 1992年 / 45卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.45.1556

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The accuracy of the widely used Van Regemorter formula [Astrophys. J. 136, 906 (1962)] for calculating the collision strengths needed in applications to high-temperature plasmas is tested by comparison with numerous more accurate calculations. It is found to be frequently a very poor approximation, especially for DELTA-n greater-than-or-equal-to 1 excitation transitions from levels with l < n - 1, and the recommendation is made that with the recent advances in calculational procedures and available accurate atomic data use of the Van Regemorter formula should be discontinued.

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页码：1556 / 1561

页数：6

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