Rate Coefficients for Dielectronic Recombination of Carbon-like 40Ca14+

doi:10.3847/1538-4357/abc1e4

	Rate Coefficients for Dielectronic Recombination of Carbon-like 40Ca14+
	Wen,W. Q.2,3; Huang,Z. K.3; Wang,S. X.7; Khan,N.2,3; Wang,H. B.3; Chen,C. Y.1; Zhang,C. Y.1; Preval,S.6; Badnell,N. R.5; Ma,W. L.7
刊名	The Astrophysical Journal
	2020-12-01
卷号	905 期号:1
关键词	Atomic spectroscopy Spectroscopy Atomic data benchmarking Atomic physics
ISSN号	0004-637X
DOI	10.3847/1538-4357/abc1e4
通讯作者	Ma,X.()
英文摘要	Abstract Dielectronic recombination (DR) rate coefficients for carbon-like 40Ca14+ forming nitrogen-like 40Ca13+ have been measured using the electron–ion merged-beam technique at the heavy-ion storage ring CSRm at the Institute of Modern Physics in Lanzhou, China. The measured DR rate coefficients in the energy range from 0 to 92 eV cover most of the DR resonances associated with 2s22p2?→?2s22p2 and 2s22p2?→?2s2p3 core transitions (ΔN?=?0). Theoretical calculations of the DR cross sections were carried out by using two different state-of-the-art atomic theoretical techniques, multiconfiguration Breit–Pauli (MCBP) code AUTOSTRUCTURE and relativistic configuration interaction code FAC, to compare with the experimental rate coefficients. The theoretical calculations agree with the experimental results at collision energy higher than 10 eV. However, significant discrepancies of resonance energies and strengths can be found at collision energy below 8 eV. Temperature-dependent plasma recombination rate coefficients were derived from the measured DR rate coefficients in the energy range from 0.1 to 1000 eV and compared with the recommended atomic data from the literature. The theoretical data of Gu et al. and Zatsarinny et al. are 30% lower than the experimental results at the temperatures of photoionized plasmas, but have a very good agreement at the temperatures of collisionally ionized plasmas. Other previously published theoretical data of Jacobs et al. and Mazzotta et al. by using Burgess formula and LS-coupling calculations significantly underestimate the plasma rate coefficients in the low temperature range. The present results comprise a set of benchmark data suitable for astrophysical modeling.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-905-1-ABC1E4
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/138578]
专题	中国科学院近代物理研究所
通讯作者	Ma,X.
作者单位	1.Shanghai EBIT Laboratory, Institute of Modern Physics, Fudan University, Shanghai 200433, People's Republic of China 2.University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China 3.Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, People's Republic of China; wenweiqiang@impcas.ac.cn, x.ma@impcas.ac.cn 4.ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany 5.Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK 6.Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK 7.Hefei National Laboratory for Physical Sciences at Microscale, Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, People's Republic of China
推荐引用方式 GB/T 7714	Wen,W. Q.,Huang,Z. K.,Wang,S. X.,et al. Rate Coefficients for Dielectronic Recombination of Carbon-like 40Ca14+[J]. The Astrophysical Journal,2020,905(1).
APA	Wen,W. Q..,Huang,Z. K..,Wang,S. X..,Khan,N..,Wang,H. B..,...&Ma,X..(2020).Rate Coefficients for Dielectronic Recombination of Carbon-like 40Ca14+.The Astrophysical Journal,905(1).
MLA	Wen,W. Q.,et al."Rate Coefficients for Dielectronic Recombination of Carbon-like 40Ca14+".The Astrophysical Journal 905.1(2020).