Pure ionization cross section of helium and ionization mechanism

被引：9
|
作者：
Chen, X. M. [1 ]
Lu, Y. X. [1 ]
Gao, Z. M. [1 ]
Cui, Y. [1 ]
Liu, Y. W. [1 ]
Du, J. [1 ]
机构：
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 262卷 / 02期
基金：
中国国家自然科学基金;
关键词：
cross section; pure ionization;
D O I：
10.1016/j.nimb.2007.01.083
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Pure target ionization was investigated for 0.4-6.4 MeV Cq+(q = 1-4) + He and Oq+ (q = 1-4) + He collisions. The double-to-single target ionization ratios R-21 were measured using coincidence techniques. We compare our results with existing experimental results and find they are in good agreement. The ratio R-21 is nearly independent of projectile charge state. The relation of R-21 similar to V is analyzed using the over barrier model (OBM) and ionization probability, which is described in our extended over barrier model. Our calculation agrees well with the experimental results. (c) 2007 Published by Elsevier B.V.
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页码：161 / 164
页数：4
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