中国物理B ›› 2025, Vol. 34 ›› Issue (7): 73402-073402.doi: 10.1088/1674-1056/adcb9a
所属专题： Featured Column — DATA PAPER
State-selective single- and double-electron capture in collisions of low-energy S5+ ions with helium
Yixin Fan(樊依鑫)1,2, Dadi Xing(邢大地)2, Shucheng Cui(崔述成)3, Xiaoxia Wang(王小霞)4,†, Junxia Ran(冉俊霞)1,‡, Kaizhao Lin(林楷钊)2, Xubin Zhu(朱旭斌)2,5, Dongmei Zhao(赵冬梅)2, Dalong Guo(郭大龙)2,5, Yong Gao(高永)2,5, Shaofeng Zhang(张少锋)2,5,6, Xiaolong Zhu(朱小龙)2,5,6,§, and Xinwen Ma(马新文)2,5,6
- 1 College of Physics Science and Technology, Hebei University, Baoding 071002, China;
2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
3 College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;
4 College of Physics, Chendu University of Technology, Chengdu 610059, China;
5 University of Chinese Academy of Sciences, Beijing 100049, China;
6 State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
State-selective single- and double-electron capture in collisions of low-energy S5+ ions with helium
Yixin Fan(樊依鑫)1,2, Dadi Xing(邢大地)2, Shucheng Cui(崔述成)3, Xiaoxia Wang(王小霞)4,†, Junxia Ran(冉俊霞)1,‡, Kaizhao Lin(林楷钊)2, Xubin Zhu(朱旭斌)2,5, Dongmei Zhao(赵冬梅)2, Dalong Guo(郭大龙)2,5, Yong Gao(高永)2,5, Shaofeng Zhang(张少锋)2,5,6, Xiaolong Zhu(朱小龙)2,5,6,§, and Xinwen Ma(马新文)2,5,6
- 1 College of Physics Science and Technology, Hebei University, Baoding 071002, China;
2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
3 College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;
4 College of Physics, Chendu University of Technology, Chengdu 610059, China;
5 University of Chinese Academy of Sciences, Beijing 100049, China;
6 State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
摘要： State-selective single- and double-electron capture processes in collisions of S$^{5+}$ ions with helium at energies ranging from 50.8 keV to 100 keV were investigated using cold target recoil ion momentum spectroscopy (COLTRIMS). $Q$-value spectra and projectile scattering angle distributions were obtained. For single-electron capture, single electron capture into $n = 3$ states of the projectile ion is dominant. As the projectile energy increases, the contribution of single electron capture into $n = 4$ states is observed. Experimental relative cross-sections for single-electron capture into different projectile final states were compared with theoretical predictions based on the molecular orbital close-coupling (MOCC) method. In double-electron capture, two-electron populating into the 3s$^2$3p and 3s3p$^2$ states of projectile dominates. The reaction window calculated from the classical molecular Coulombic barrier model can qualitatively explain the experimental results. The scattering angle distribution of the multi-peak structure of the double-electron capture process is observed. The database is openly available in Science Data Bank at https://doi.org/10.57760/sciencedb.j00113.00233.
中图分类号: (Charge transfer)
- 34.70.+e