Radiative rates and electron-impact excitation for the n <= 6 fine-structure levels in H-like ions with 13 <= Z <= 42

doi:10.1051/0004-6361/201526567

	Radiative rates and electron-impact excitation for the n <= 6 fine-structure levels in H-like ions with 13 <= Z <= 42
	Li, S.1,2; Yan, J.3,4; Li, C. Y.3; Si, R.1,2; Guo, X. L.1,2; Huang, M.1,2; Chen, C. Y.1,2; Zou, Y. M.1,2
刊名	ASTRONOMY & ASTROPHYSICS
	2015-11-01
卷号	583 页码:9
关键词	atomic data atomic processes
ISSN号	1432-0746
DOI	10.1051/0004-6361/201526567
英文摘要	Context. Many observed emission lines from space missions are due to highly charged H-like ions. An analysis of the lines provides information on the temperature, density, and chemical composition of plasmas. A wide range of atomic parameters, such as energy levels, radiative rates, and excitation rate coefficients are needed to achieve this goal. Aims. In this paper we report on calculations for energy levels, radiative rates, collision strengths, and effective collision strengths for transitions among the 36 lowest levels of the n <= 6 configurations of highly charged H-like ions with 13 <= Z <= 42. Methods. The widely used Flexible Atomic Code (FAC) is adopted for the calculation. Energy levels and radiative rates are calculated within the relativistic configuration-interaction method. Employing relativistic distorted-wave approximation, direct excitation collision strengths are calculated at eleven scattered electron energies E-f' = 0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, and 2.5, where E-f' is in units of Z(2) rydbergs. Collision strengths at higher energies are estimated by interpolation/extrapolation using relativistic Be the form. Resonance contributions through the relevant He-like doubly excited n ' l ' n '' l '' configurations with n ' <= 7 and n '' <= 75 are explicitly taken into account using the independent-process isolated-resonance approximation. Radiation damping effects are taken into account. Results. We present the radiative rates, oscillator strengths, and line strengths for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2), magnetic quadrupole (M2), electric octupole (E3), and magnetic octupole (M3) transitions. Assuming a Maxwellian electron velocity distribution, we report effective collision strengths over a wide temperature range between 2 x 10(3) x Z(2) and 2 x 10(6) x Z(2) K. We believe that the present results are the most extensive and definitive atomic dataset to date for highly charged H-like ions.
资助项目	National Natural Science Foundation of China[11076009] ; National Natural Science Foundation of China[11374062] ; Chinese Association of Atomic and Molecular Data ; National Magnetic Confinement Fusion Program[2009GB106001] ; Shanghai Leading Academic Discipline Project[B107]
WOS关键词	WAVE COLLISION STRENGTHS ; OPTICALLY ALLOWED TRANSITIONS ; 105 DELTA-N=0 TRANSITIONS ; 2-PHOTON DECAY-RATES ; HIGHLY-CHARGED IONS ; HELIUM-LIKE IONS ; C-LIKE IONS ; B-LIKE IONS ; RATE COEFFICIENTS ; OSCILLATOR-STRENGTHS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000365072200106
资助机构	National Natural Science Foundation of China ; Chinese Association of Atomic and Molecular Data ; National Magnetic Confinement Fusion Program ; Shanghai Leading Academic Discipline Project
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/41031]
专题	中国科学院近代物理研究所
通讯作者	Li, S.
作者单位	1.Fudan Univ, Appl Ion Beam Phys Lab, Key Lab, Minist Educ, Shanghai 200433, Peoples R China 2.Fudan Univ, Dept Nucl Sci & Technol, Inst Modern Phys, Shanghai EBIT Lab, Shanghai 200433, Peoples R China 3.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China 4.Peking Univ, Ctr Appl Phys & Technol, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Li, S.,Yan, J.,Li, C. Y.,et al. Radiative rates and electron-impact excitation for the n <= 6 fine-structure levels in H-like ions with 13 <= Z <= 42[J]. ASTRONOMY & ASTROPHYSICS,2015,583:9.
APA	Li, S..,Yan, J..,Li, C. Y..,Si, R..,Guo, X. L..,...&Zou, Y. M..(2015).Radiative rates and electron-impact excitation for the n <= 6 fine-structure levels in H-like ions with 13 <= Z <= 42.ASTRONOMY & ASTROPHYSICS,583,9.
MLA	Li, S.,et al."Radiative rates and electron-impact excitation for the n <= 6 fine-structure levels in H-like ions with 13 <= Z <= 42".ASTRONOMY & ASTROPHYSICS 583(2015):9.