X-ray emission for Ar11+ ions impacting on various targets in the collisions near the Bohr velocity

doi:10.1088/1674-1056/abe22f

中国物理B ›› 2021, Vol. 30 ›› Issue (8): 83201-083201.doi: 10.1088/1674-1056/abe22f

X-ray emission for Ar¹¹⁺ ions impacting on various targets in the collisions near the Bohr velocity

Xian-Ming Zhou(周贤明)^1,2, Jing Wei(尉静)¹, Rui Cheng(程锐)^3,†, Yan-Hong Chen(陈燕红)³, Ce-Xiang Mei(梅策香)¹, Li-Xia Zeng(曾利霞)¹, Chang-Hui Liang(梁昌慧)¹, Yao-Zong Li(李耀宗)¹, Yong-Tao Zhao(赵永涛)^2,3, and Xiao-An Zhang(张小安)^1,3,‡

1 Ion Beam and Optical Physics Joint Laboratory of Xianyang Normal University and Institute of Modern Physics of CAS, Xianyang Normal University, Xianyang 712000, China;
2 School of Science, Xi'an Jiaotong University, Xi'an 710049, China;
3 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

收稿日期:2020-12-15 修回日期:2021-01-29 接受日期:2021-02-02 出版日期:2021-07-16 发布日期:2021-07-16
通讯作者: Rui Cheng, Xiao-An Zhang E-mail:chengrui@impcas.ac.cn;zhangxiaoan2000@126.com
基金资助:
Project supported by the National Key R&D Program of China (Grant No. 2017YFA0402300), the National Natural Science Foundation of China (Grant Nos. 11505248, 11775042, 11875096, and 11605147) the Scientific Research Program Funded by Shaanxi Provincial Education Department, China (Grant No. 20JK0975), the Scientific Research Plan of Science and Technology Department of Shaanxi Province, China (Grant Nos. 2021JQ-812 and 2020JM-624), Open Funds of MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions (Grant No. MPCEC201901), and Xianyang Normal University Science Foundation (Grant Nos. XSYK20009 and XSYK20024).

X-ray emission for Ar¹¹⁺ ions impacting on various targets in the collisions near the Bohr velocity

1 Ion Beam and Optical Physics Joint Laboratory of Xianyang Normal University and Institute of Modern Physics of CAS, Xianyang Normal University, Xianyang 712000, China;
2 School of Science, Xi'an Jiaotong University, Xi'an 710049, China;
3 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2020-12-15 Revised:2021-01-29 Accepted:2021-02-02 Online:2021-07-16 Published:2021-07-16
Contact: Rui Cheng, Xiao-An Zhang E-mail:chengrui@impcas.ac.cn;zhangxiaoan2000@126.com
Supported by:
Project supported by the National Key R&D Program of China (Grant No. 2017YFA0402300), the National Natural Science Foundation of China (Grant Nos. 11505248, 11775042, 11875096, and 11605147) the Scientific Research Program Funded by Shaanxi Provincial Education Department, China (Grant No. 20JK0975), the Scientific Research Plan of Science and Technology Department of Shaanxi Province, China (Grant Nos. 2021JQ-812 and 2020JM-624), Open Funds of MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions (Grant No. MPCEC201901), and Xianyang Normal University Science Foundation (Grant Nos. XSYK20009 and XSYK20024).

摘要/Abstract

摘要： X-ray emission from the collisions of 3 MeV Ar¹¹⁺ ions with V, Fe, Co, Ni, Cu, and Zn is investigated. Both the x-rays of the target atom and projectile are observed simultaneously. The x-ray yield is extracted from the original count. The inner-shell ionization cross section is estimated by the binary encounter approximation model and compared with the experimental result. The remarkable result is that the Ar K-shell x-ray yield is diminished with the target atomic number increasing, which is completely opposite to the theoretical calculation. That is interpreted by the competitive consumption of the energy loss for the ionization of inner-shell electrons between the projectile and target atom.

关键词: ion-atom collision, near Bohr velocity, x-ray, coulomb ionization

Abstract: X-ray emission from the collisions of 3 MeV Ar¹¹⁺ ions with V, Fe, Co, Ni, Cu, and Zn is investigated. Both the x-rays of the target atom and projectile are observed simultaneously. The x-ray yield is extracted from the original count. The inner-shell ionization cross section is estimated by the binary encounter approximation model and compared with the experimental result. The remarkable result is that the Ar K-shell x-ray yield is diminished with the target atomic number increasing, which is completely opposite to the theoretical calculation. That is interpreted by the competitive consumption of the energy loss for the ionization of inner-shell electrons between the projectile and target atom.

Key words: ion-atom collision, near Bohr velocity, x-ray, coulomb ionization

中图分类号: (Inner-shell excitation and ionization)

32.80.Aa

32.30.Rj (X-ray spectra) 34.80.Dp (Atomic excitation and ionization) 79.20.Rf (Atomic, molecular, and ion beam impact and interactions with surfaces)

Xian-Ming Zhou(周贤明), Jing Wei(尉静), Rui Cheng(程锐), Yan-Hong Chen(陈燕红), Ce-Xiang Mei(梅策香), Li-Xia Zeng(曾利霞), Chang-Hui Liang(梁昌慧), Yao-Zong Li(李耀宗), Yong-Tao Zhao(赵永涛), and Xiao-An Zhang(张小安). X-ray emission for Ar¹¹⁺ ions impacting on various targets in the collisions near the Bohr velocity[J]. 中国物理B, 2021, 30(8): 83201-083201.

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X-ray emission for Ar¹¹⁺ ions impacting on various targets in the collisions near the Bohr velocity

X-ray emission for Ar¹¹⁺ ions impacting on various targets in the collisions near the Bohr velocity

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