Projectile charge-state dependence of transfer ionization to single capture ratio in collisions of multiply charged ions with He

被引:14
|
作者
Montenegro, EC [1 ]
Wong, KL [1 ]
Wu, W [1 ]
Richard, P [1 ]
BenItzhak, I [1 ]
Cocke, CL [1 ]
Moshammer, R [1 ]
Giese, JP [1 ]
Wang, YD [1 ]
Lin, CD [1 ]
机构
[1] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO, DEPT FIS, BR-22452970 RIO DE JANEIRO, BRAZIL
来源
PHYSICAL REVIEW A | 1997年 / 55卷 / 03期
关键词
D O I
10.1103/PhysRevA.55.2009
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The ratios of the cross sections for the processes of transfer ionization (TI) and single capture (SC) were measured for 2 MeV/u Cl-7+,Cl-9+,Cl-13+,Cl-14+,Cl-15+ and Ti-15+,Ti-18+ projectile ions on He targets. The ratio was determined using a cold He gas target and measuring the coincidences between the projectile and the charge states of the emerging recoil ions. The measured sigma(TI)/sigma(SC) ratio shows a strong dependence with the projectile charge state that is well described by calculations based on the independent electron model. A model to take into account the effect of the electron screening of partially dressed projectiles in the target ionization is also presented.
引用
收藏
页码:2009 / 2014
页数:6
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