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Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2
Xu,J. W.1,2; Xu,C. X.3,4; Zhang,R. T.1; Zhu,X. L.1,2; Feng,W. T.1; Gu,L.5,6; Liang,G. Y.7; Guo,D. L.1; Gao,Y.1; Zhao,D. M.1; Zhang,S. F.1,2; Su,M. G.3,4; Ma,X.1,2
2021-02-26
Source PublicationThe Astrophysical Journal Supplement Series
ISSN0067-0049
Volume253Issue:1
AbstractAbstract 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.
KeywordAtomic spectroscopy Atomic physics Collision processes Molecular physics Atomic data benchmarking
DOI10.3847/1538-4365/abd020
Language英语
WOS IDIOP:0067-0049-253-1-abd020
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/60070
Collection中国科学院国家天文台
Corresponding AuthorZhu,X. L.
Affiliation1.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
2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3.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
4.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
5.RIKEN High Energy Astrophysics Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
6.SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
Recommended Citation
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).
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