CHARGE-TRANSFER CROSS-SECTIONS FOR COLLISIONS OF LI-3+, BE-4+, B-5+, AND C-6+ IONS WITH ATOMIC-HYDROGEN

被引:96
作者
RYUFUKU, H [1 ]
WATANABE, T [1 ]
机构
[1] UNIV TOKYO,FAC ENGN,DEPT APPL PHYS,BUNKYO KU,TOKYO 113,JAPAN
来源
PHYSICAL REVIEW A | 1979年 / 19卷 / 04期
关键词
D O I
10.1103/PhysRevA.19.1538
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Charge transfer cross sections for Li3+ + H, Be4+ + H, B5+ + H, and C6+ + H collisions are calculated for ion-impact energies from 0.025 to 200, or to 2000 (for the C6+ + H case) keV/amu by means of the previously proposed unitarized formula based on the distorted-wave Born approximation. The results, compared with other theoretical and experimental values, show that the present formula is very useful for impact energies from 2 to 100 keV/amu, but tends to overestimate cross sections for impact energies greater than 100 keV/amu. It is suggested that the formula can be improved by taking direct-excitation and ionization channels into consideration. A scaling rule based on the cross section obtained by means of the present method is also considered, and is applied to scaling of the experimental data. © 1979 The American Physical Society.
引用
收藏
页码:1538 / 1549
页数:12
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