Atomic data for astrophysics .2. New analytic fits for photoionization cross sections of atoms and ions

被引：1632

作者：

Verner, DA ^{[1
]}

Ferland, GJ ^{[1
]}

Korista, KT ^{[1
]}

Yakovlev, DG ^{[1
]}

机构：

[1] AF IOFFE PHYS TECH INST,ST PETERSBURG 194021,RUSSIA

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 465卷 / 01期

关键词：

atomic data; atomic processes;

D O I：

10.1086/177435

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a complete set of analytic Ms to the nonrelativistic photoionization cross sections for the ground states of atoms and ions of elements from H through Si, and S, Ar, Ca, and Fe. Near the ionization thresholds, the fits are based on the Opacity Project theoretical cross sections interpolated and smoothed over resonances. At higher energies, the fits reproduce calculated Hartree-Dirac-Slater photoionization cross sections.

引用

页码：487 / 498

页数：12

共 25 条

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