Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2

doi:10.3847/1538-4365/abd020

	Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2
	Xu,J. W.1,3; Xu,C. X.6,7; Zhang,R. T.3; Zhu,X. L.1,3; Feng,W. T.3; Gu,L.4,5; Liang,G. Y.2; Guo,D. L.3; Gao,Y.3; Zhao,D. M.3
刊名	The Astrophysical Journal Supplement Series
	2021-02-26
卷号	253 期号:1
关键词	Atomic spectroscopy Atomic physics Collision processes Molecular physics Atomic data benchmarking
ISSN号	0067-0049
DOI	10.3847/1538-4365/abd020
通讯作者	Zhu,X. L.()
英文摘要	Abstract Charge exchange between highly charged ions and neutral atoms and molecules has been considered as one of the important mechanisms controlling soft X-ray emissions in many astrophysical objects and environments. However, for modeling charge exchange soft X-ray emission, the data of n- and l-resolved state-selective capture cross sections are often obtained by empirical and semiclassical theory calculations. With a newly built cold target recoil-ion momentum spectroscopy (COLTRIMS) apparatus, we perform a series of measurements of the charge exchange of Ne(8,9)+ ions with He and H2 for collision energy ranging from 1 to 24.75 keV/u. n-resolved state-selective capture cross sections are reported. By comparing the measured state-selective capture cross sections to those calculated by the multichannel Landau–Zener method (MCLZ), it is found that MCLZ calculations are in good agreement with the measurement for the dominant n capture for He target. Furthermore, by using nl-resolved cross sections calculated by MCLZ and applying l distributions commonly used in the astrophysical literature to experimentally derived n-resolved cross sections, we calculate the soft X-ray emissions in the charge exchange between 4 keV/u Ne8+ and He by considering the radiative cascade from the excited Ne7+ ions. Reasonable agreement is found in comparison to the measurement for even and separable models, and MCLZ calculations give results in a better agreement.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0067-0049-253-1-ABD020
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137963]
专题	中国科学院近代物理研究所
通讯作者	Zhu,X. L.
作者单位	1.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 2.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 3.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China; zhangrt@impcas.ac.cn, zhuxiaolong@impcas.ac.cn, x.ma@impcas.ac.cn 4.SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands 5.RIKEN High Energy Astrophysics Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan 6.Joint Laboratory of Atomic and Molecular Physics, Northwest Normal University and Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730070, People’s Republic of China 7.Key Laboratory of Atomic and Molecular Physics & Functional Material of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
推荐引用方式 GB/T 7714	Xu,J. W.,Xu,C. X.,Zhang,R. T.,et al. Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2[J]. The Astrophysical Journal Supplement Series,2021,253(1).
APA	Xu,J. W..,Xu,C. X..,Zhang,R. T..,Zhu,X. L..,Feng,W. T..,...&Ma,X..(2021).Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2.The Astrophysical Journal Supplement Series,253(1).
MLA	Xu,J. W.,et al."Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2".The Astrophysical Journal Supplement Series 253.1(2021).