Dynamic charge state distributions of 5 MeV Xe20+ ions penetrating through gaseous argon target. (30th October 2020)

• Record Type: Journal Article
• Authors: Wang, Z; Cheng, R; Xue, F B; Chen, Y H; Lei, Y; Wang, Y Y; Zhou, Z X; Su, M G; Yang, J; Dong, C Z
• Is Part Of: Physica scripta. Volume 95:Number 10(2020)
• Publication Date: 2020-10-30
• Subjects: Bohr velocity -- charge state distribution -- charge-changing cross section -- average charge -- energy loss; 34.50.Fa -- 34.70.+e -- 34.50.Bw -- 52.20.Hv; Physics -- Periodicals; 530.05
• DOI: 10.1088/1402-4896/abb9e3
• Languages: English
• ISSNs: 0031-8949

Abstract

Abstract: Dynamic distribution of charge state of highly charged 131 Xe 20+ (Z = 54) ions penetrating through the different areal density of gaseous argon target are measured, with the energy of 5 MeV (38.2 keV/u). Two individual stages of charge state are observed: pre-equilibrium stage, where the distribution moves toward the lower charge state with increasing the density of target; equilibrium stage, where the average charge state remains constant as 3.5. The experimental average charge states are compared with the theoretical predictions by the semi-empirical formulas and the classical-trajectory Monte Carlo (CTMC) respectively. A strong dependence of the average charge on energy loss of projectiles is observed too.