Signature of Single Binary Encounter in Intermediate Energy He$^{2+}$–Ar Collisions$^*$
Yong Gao1,2 , Xiao-Long Zhu1 , Shao-Feng Zhang1 , Rui-Tian Zhang1 , Wen-Tian Feng1 , Da-Long Guo1 , Bin Li1 , Dong-Mei Zhao1 , Han-Bing Wang1,2 , Zhong-Kui Huang1,2 , Shun-Cheng Yan1 , Dong-Bin Qian1 , Xin-Wen Ma1**
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002 University of Chinese Academy of Sciences, Beijing 100049
Abstract ：We experimentally observe the signature of electron emission resulting from a single binary encounter mechanism in the intermediate collision energy regime of 30 keV/u He$^{2+}$ on argon. Electron emission spectra in the transfer ionization are obtained and compared with classical calculations from a two-step model considering the initial electron velocity and re-scattering of the binary encounter electron in the recoil potential. Although the present reaction is actually a four-body problem, the model starting from a binary encounter gives out surprisingly good agreement with the experimental data. Our studies show that orbital velocities of the electron affect the emission patterns of ionized electrons significantly.
收稿日期: 2016-06-03
出版日期: 2016-08-01
引用本文:
. [J]. 中国物理快报, 2016, 33(07): 73401-073401.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/33/7/073401
或
https://cpl.iphy.ac.cn/CN/Y2016/V33/I07/73401
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2016, Vol. 33 
