Measurement of n-resolved State-selective Charge Exchange in Ne(8,9)+ Collision with He and H2
文献类型：期刊论文
| 作者 | Xu,J. W.2,3; Xu,C. X.4,5; Zhang,R. T.2; Zhu,X. L.2,3; Feng,W. T.2; Gu,L.6,7; Liang,G. Y.1; Guo,D. L.2; Gao,Y.2; Zhao,D. M.2 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 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 |
| 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 |
| WOS记录号 | IOP:0067-0049-253-1-ABD020 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/60069]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Zhu,X. L. |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 2.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 3.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 4.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 5.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 6.RIKEN High Energy Astrophysics Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan 7.SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands |
| 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). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。