I L-shell X-rays from near Bohr-velocity I-20(+) ions impacting on various targets

doi:10.7498/aps.70.20201236

	I L-shell X-rays from near Bohr-velocity I-20(+) ions impacting on various targets
	Zhou Xian-Ming 2,3,4; Wei Jing 2,3; Cheng Rui 1; Zhao Yong-Tao 1,4; Zeng Li-Xia 2,3; Mei Ce-Xiang 2,3; Liang Chang-Hui 2,3; Li, Yao-Zong 2,3; Zhang Xiao-An 1,2,3; Xiao Guo-Qing 1
刊名	ACTA PHYSICA SINICA
	2021-01-20
卷号	70 期号:2 页码:7
关键词	ion-atom collision X-ray multiple ionization
ISSN号	1000-3290
DOI	10.7498/aps.70.20201236
通讯作者	Zhang Xiao-An(zhangxiaoan2000@126.com)
英文摘要	The L-shell X-ray emissions of iodine are investigated as a function of target atomic number for 4.5-MeV I-20(+) ions impacting on Fe, Co, Ni, Cu and Zn targets. Six distinct L-subshell X-rays are observed. The energy of the x-ray has a blue shift compared with the atomic data. The relative intensity ratio of L beta(1, 3, 4) and L beta(2, )(15) to L alpha(1, 2) almost increase linearly with the target atomic number increasing. The ratio of I(L tau) to I(L alpha(1, 2)) and I (L gamma(2, 3, 4, 4')) to I(L gamma(1)) are approximately proportional to the square of target atomic number. It is indicated that during the interaction of highly charged heavy ions with atom in the energy region near the Bohr velocity, the inner-shell process is mainly caused by the close-range collisions below the surface. There, the projectile not only has enough time to capture electrons from the target atom to be neutralized, but also has enough kinetic energy to ionize the inner-shell electron by coulomb interaction. At the balance between electron capture and ionization, the outer-shells of M, N, O etc. could be multiply ionized. The extent of multiple ionization increases with the target atomic number increasing. That leads to the energy shift, resulting in the change of the relative intensity ratio for the L-subshell X-ray. The smaller the atomic fluorescence, the larger the enhanced fluorescence caused by multiple ionization.
资助项目	National Basic Research Program of China[2017YFA0402300] ; National Natural Science Foundation of China[11505248] ; National Natural Science Foundation of China[11775042] ; National Natural Science Foundation of China[11875096] ; Scientific Research Program - Shaanxi Provincial Education Department, China[20JK0975] ; Scientific Research Plan of Science and Technology Department of Shaanxi Province, China[2020JM-624]
WOS关键词	HIGHLY-CHARGED IONS ; HOLLOW ATOMS ; CROSS-SECTIONS ; K-SHELLS ; EMISSION ; IONIZATION ; COLLISIONS ; SATELLITE
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000613269400005
资助机构	National Basic Research Program of China ; National Natural Science Foundation of China ; Scientific Research Program - Shaanxi Provincial Education Department, China ; Scientific Research Plan of Science and Technology Department of Shaanxi Province, China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137903]
专题	中国科学院近代物理研究所
通讯作者	Zhang Xiao-An
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Ion Beam & Opt Phys Joint Lab Xianyang Normal Uni, Xianyang 712000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Xianyang 712000, Peoples R China 4.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Zhou Xian-Ming,Wei Jing,Cheng Rui,et al. I L-shell X-rays from near Bohr-velocity I-20(+) ions impacting on various targets[J]. ACTA PHYSICA SINICA,2021,70(2):7.
APA	Zhou Xian-Ming.,Wei Jing.,Cheng Rui.,Zhao Yong-Tao.,Zeng Li-Xia.,...&Xiao Guo-Qing.(2021).I L-shell X-rays from near Bohr-velocity I-20(+) ions impacting on various targets.ACTA PHYSICA SINICA,70(2),7.
MLA	Zhou Xian-Ming,et al."I L-shell X-rays from near Bohr-velocity I-20(+) ions impacting on various targets".ACTA PHYSICA SINICA 70.2(2021):7.