Electron impact ionization of nickel multiply-charged ions

被引：4
|
作者：
Cherkani-Hassani, S [1 ]
Defrance, P [1 ]
Oualim, EM [1 ]
机构：
[1] Univ Catholique Louvain, Inst Phys, B-1348 Louvain, Belgium
来源：
PHYSICA SCRIPTA | 1999年 / T80B卷
关键词：
D O I：
10.1238/Physica.Topical.080a00292
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Absolute cross-section measurements are reported for electron impact ionization of Ni12+ and Ni14+ in an energy range from threshold to about 5.5 keV. For single ionization, data show that the first observed threshold corresponds to the metastable state [Ne]3s(2)3p(4) (1)So which is located 12 eV above the ground state. Excitation-autoionization is seen to play a dominant role for this reaction in the whole energy range. Double ionization is seen to be dominated by L-shell ionization followed by total autoionization. For Ni12+, triple ionization is found to be two orders of magnitude lower than double ionization and is attributed to direct ionization only.
引用
收藏
页码：292 / 294
页数：3
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