Photoionization of doubly-charged Ca ions

被引:7
|
作者
West, JB [1 ]
Kjeldsen, H
Folkmann, F
Andersen, T
机构
[1] CLRC, Daresbury Labs, Warrington WA4 4AD, Cheshire, England
[2] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark
关键词
D O I
10.1088/0953-4075/34/20/314
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present measurements on the absolute photoionization cross section of doubly-charged Ca ions in the photon energy range 50-70 eV, which encompasses resonances of the type 3s --> np. The energy dependence of the continuum cross section differs from the earlier measurement by van Kampen et al (1997), but is reproduced quite well by a recent R-matrix calculation (Wilson et al 1999), although the estimates of the oscillator strengths of-the resonance lines are too low.
引用
收藏
页码:4035 / 4040
页数:6
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