Electron density diagnostic potential of Ar XIV soft X-ray emission lines

	Electron density diagnostic potential of Ar XIV soft X-ray emission lines
	Liang, G. Y.; Zhao, G.; Zeng, J. L.; Shi, J. R.
刊名	JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
	2006-12-01
卷号	102 期号:3 页码:473-481
关键词	soft X-ray electron density line intensity ratio diagnostic
英文摘要	Theoretical electron density-sensitive line ratios R-1-R-6 of Ar XIV soft X-ray emission lines are presented. We found that these line ratios are sensitive to the electron density n(e), and the ratio R-1 is insensitive to electron temperature T-e. Recent work has shown that accurate atomic data, such as electron impact excitation rates, is very important for an reliable determination of the electron density of laboratory and astrophysical plasmas. Present work indicates that the maximum discrepancy of line ratios introduced from different atomic data calculated with distorted wave and R-matrix approximations, is up to 18% in the range of n(e) = 10(9-13) cm(-3). By comparison of these line ratios with experiment results carried out in electron beam ion trap (EBIT-II), electron density of the laboratory plasma is diagnosed, and a consistent result is obtained from R-1, R-2 and R-3. Our result is in agreement with that diagnosed by Chen et al. using triplet of N VI. A relative higher diagnosed electron density from R-2 is due to its weak sensitivity to electron temperature. A better consistency at lower T-e indicates that temperature of the laboratory plasma is lower than log T-e(K) = 6.5. Comparison between the measured and theoretical ratios reveals that 32.014 angstrom line is weakly blended by lines from other Ar ions, while 30.344 angstrom line is strongly contaminated. (c) 2006 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000240875600014
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7101]
专题	国家天文台_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, G. Y.,Zhao, G.,Zeng, J. L.,et al. Electron density diagnostic potential of Ar XIV soft X-ray emission lines[J]. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER,2006,102(3):473-481.
APA	Liang, G. Y.,Zhao, G.,Zeng, J. L.,&Shi, J. R..(2006).Electron density diagnostic potential of Ar XIV soft X-ray emission lines.JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER,102(3),473-481.
MLA	Liang, G. Y.,et al."Electron density diagnostic potential of Ar XIV soft X-ray emission lines".JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 102.3(2006):473-481.