期刊论文

Lu Yan-Xia

英文

中国物理B

1674-1056

2011

20

3

033402-1-033402-5

10.1088/1674-1056/20/3/033402

Project supported by the Special Foundation for Key Programs of Basic Research at its earlier stage, Ministry of Science and Technology, China（Grant No. 2002CCA00900） and by the Foundation for the Doctors of University of South China （Grant No. 5-2007-XQD-001）. This experiment was successfully done with the great assistance of Dr. Yu Deyang, Prof. Liu Zhaoyuan and Engineers Chen Zichun and Li Lanting. We thank them very much for their remarkable work.

本校为第一且通讯机构

Electron-loss cross sections of Oq+ (q = 1 - 4) colliding with He, Ne and Ar atoms are measured in the intermediate velocity regime. The ratios of the cross sections of two-electron loss to that of one-electron loss R 21 are presented. It is shown that single-channel analysis is not sufficient to explain the results, but that projectile electron loss, electron capture by the projectile and target ionization must be considered together to interpret the experimental data. The screening and antiscreening effects can account for the threshold veloc...