Charge-exchange soft X-ray emission of highly charged ions with inclusion of multiple-electron capture

doi:10.1093/mnras/stab2537

	Charge-exchange soft X-ray emission of highly charged ions with inclusion of multiple-electron capture
	Liang, G. Y.2; Zhu, X. L.3; Wei, H. G.2; Yuan, D. W.2; Zhong, J. Y.1; Wu, Y.4,5,6; Hutton, R.1; Cui, W.7; Ma, X. W.3; Zhao, G.2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-12-01
卷号	508 期号:2 页码:2194-2203
关键词	atomic processes line: formation X-rays: general
ISSN号	0035-8711
DOI	10.1093/mnras/stab2537
通讯作者	Liang, G. Y.(gyliang@bao.ac.cn)
英文摘要	Charge exchange has been recognized as a primary source of soft X-ray emission in many astrophysical outflow environments, including cometary and planetary exospheres impacted by the solar wind. Some models have been set up by using different data collections of charge-exchange cross-sections. However, multiple-electron transfer has not been included in these models. In this paper, we set up a charge-exchange model with the inclusion of double-electron capture (DEC), and make a detailed investigation of this process on X-ray emissions of highly charged carbon, nitrogen, oxygen, and neon ions by using available experimental cross-sections. We also study the effect of different n-selective cross-sections on soft X-ray emission by using available experimental n-distributions. This work reveals that DEC enhancement on line intensity is linearly proportional to the ratio of ion abundance in the solar wind. It is more obvious for soft X-rays from carbon ions (C4+) in collision with CO2, and the enhancement on line intensity can be up to 53 per cent with typical ion abundances 'Advanced Composition Explorer (ACE)1 in the solar wind. The synthetic spectra with parameters from the Ulysses mission for the solar wind reveal velocity dependence, target dependence, as well as the non-negligible contribution from the DEC.
资助项目	National Key R&D Program of China[2017YFA0402401] ; National Natural Science Foundation of China[U1931140] ; National Natural Science Foundation of China[11934004] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB34020205] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050]
WOS关键词	CROSS-SECTIONS ; XMM-NEWTON ; CHANDRA ; SINGLE
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000713807500048
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Key Programs of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/139972]
专题	中国科学院近代物理研究所
通讯作者	Liang, G. Y.
作者单位	1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 4.Inst Appl Phys & Computat Math, Key Lab Computat Phys, POB 8009, Beijing 100088, Peoples R China 5.Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China 6.Peking Univ, Coll Engn, Beijing 100871, Peoples R China 7.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Liang, G. Y.,Zhu, X. L.,Wei, H. G.,et al. Charge-exchange soft X-ray emission of highly charged ions with inclusion of multiple-electron capture[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,508(2):2194-2203.
APA	Liang, G. Y..,Zhu, X. L..,Wei, H. G..,Yuan, D. W..,Zhong, J. Y..,...&Zhao, G..(2021).Charge-exchange soft X-ray emission of highly charged ions with inclusion of multiple-electron capture.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,508(2),2194-2203.
MLA	Liang, G. Y.,et al."Charge-exchange soft X-ray emission of highly charged ions with inclusion of multiple-electron capture".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 508.2(2021):2194-2203.