NAOC Open IR  > 光学天文研究部
Identification and analysis of soft X-ray lines of Ar XIII-Ar XVI in laboratory and astrophysical plasmas
Liang, GY; Zhao, G; Zeng, JL; Shi, JR
2004-05-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号350期号:1页码:298-306
摘要The emission-line spectrum of an argon plasma in the soft X-ray region 20-30 Angstrom is simulated using our calculated atomic data. The atomic data, including energy levels, spontaneous radiative decay rates and effective collision strengths, are obtained by the Flexible Atomic Code recently developed by Gu. Good agreement is found between the theoretical and experimental emission spectra. All strong lines observed in the experiment have been identified. Compared with previous theoretical results, the predicted intensity for the line located at 27.631 Angstrom from the 3d-2p transition of Ar XIV is dramatically reduced, resulting in a better agreement with experiment. Some weak lines are also identified in this work. In order to simulate the experimental spectra, the electron density and temperature are required. We choose density- and temperature-sensitive lines to determine these quantities. Reliable results for the electron density around 8.7 x 10(10) cm(-3) and electron temperature around 2.4 x 10(6) K have been obtained. The present atomic data can also be used to identify the emission lines of astrophysical plasmas. As an example, some lines belonging to Ar ions are identified for the first time by comparing the spectra from Chandra LETG observation of Capella with the synthetic spectra. The line located at 27.018 Angstrom which was originally assigned to C VI (Lygamma), should be attributed to Ar XV from the present work. The line at 28.336 Angstrom is also identified for the first time as the 3s-2p transition of Ar XV.
关键词Line : Identification Methods : Analytical Stars : Coronae X-rays : General
DOI10.1111/j.1365-2966.2004.07641.x
收录类别SCI
语种英语
WOS记录号WOS:000220979300030
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8399
专题光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Natl Univ Def Technol, Dept Appl Phys, Changsha 410073, Peoples R China
推荐引用方式
GB/T 7714
Liang, GY,Zhao, G,Zeng, JL,et al. Identification and analysis of soft X-ray lines of Ar XIII-Ar XVI in laboratory and astrophysical plasmas[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,350(1):298-306.
APA Liang, GY,Zhao, G,Zeng, JL,&Shi, JR.(2004).Identification and analysis of soft X-ray lines of Ar XIII-Ar XVI in laboratory and astrophysical plasmas.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,350(1),298-306.
MLA Liang, GY,et al."Identification and analysis of soft X-ray lines of Ar XIII-Ar XVI in laboratory and astrophysical plasmas".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 350.1(2004):298-306.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liang, GY]的文章
[Zhao, G]的文章
[Zeng, JL]的文章
百度学术
百度学术中相似的文章
[Liang, GY]的文章
[Zhao, G]的文章
[Zeng, JL]的文章
必应学术
必应学术中相似的文章
[Liang, GY]的文章
[Zhao, G]的文章
[Zeng, JL]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。