%0 Journal Article
%T Investigation of the processes in the collisions of partially stripped carbon ions with helium atom at low to intermediate energies<br>中低能非全裸C离子与He原子的碰撞研究
%A Gao Zhi-Min
%A Chen Xi-Meng
%A Liu Zhao-Yuan
%A Ding Bao-Wei
%A Lu Yan-Xia
%A Fu Hong-Bin
%A Liu Yu-Wen
%A Du Juan
%A Cui Ying
%A Shao Jian-Xiong
%A Zhang Hong-Qiang
%A Sun Guang-Zhi
%A <br>高志民
%A 陈熙萌
%A 刘兆远
%A 丁宝卫
%A 鲁彦霞
%A 付宏斌
%A 刘玉文
%A 杜娟
%A 崔莹
%A 邵剑雄
%A 张红强
%A 孙光智
%J 物理学报
%D 2007
%I 
%X he cross-section ratios for the double-to-single ionization of He associated with no projectile charge change (Rq,q), single-electron capture (Rq,q-1) and single-electron loss (Rq,q+1) were measured using coincidence technique. The coincidences resulted from the signals of recoil ions and scattered projectiles. For a given incoming projectile charge state the double-to-single ionization ratios vary strongly with the outgoing reaction channel. It is found that Rq,q<Rq,q+1<Rq,q-1. For direct ionization, Rq,q is nearly independent of the incident projectile charge state. However, for ionization associated with single-electron capture and single-electron loss by the projectile, Rq,q-1 and Rq,q+1 depend strongly on the incident charge state of the projectile. These ionization ratios are interpreted in terms of theories of the atomic polarization effect and the screening and antiscreening effect of the electrons around the core.
%K ion-atom collision
%K ionization
%K cross-section ratio<br>离子-原子碰撞
%K 电离
%K 截面比
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=BE882BC747389278&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=E158A972A605785F&sid=09D37D27C104E85E&eid=E213125423CD99CD&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=22