Dielectronic recombination rate coefficients of fluorine-like nickel

doi:10.1051/0004-6361/201935648

	Dielectronic recombination rate coefficients of fluorine-like nickel
	Mao, Li-Jun7 ; Ma, Xiao-Ming7 ; Li, Jie7 ; Tang, Mei-Tang7 ; Yin, Da-Yu7 ; Yuan, You-Jin7 ; Yang, Jian-Cheng7 ; Shi, Ying-Long 5; Dong, Chen-Zhong 6; Ma, Xin-Wen7
刊名	ASTRONOMY & ASTROPHYSICS
	2019-07-18
卷号	627 页码:8
关键词	atomic data atomic processes plasmas
ISSN号	1432-0746
DOI	10.1051/0004-6361/201935648
通讯作者	Wen, Wei-Qiang(wenweiqiang@impcas.ac.cn)
英文摘要	Electron-ion recombination rate coefficients for fluorine-like nickel ions have been measured by employing the merged-beam technique at the cooler storage ring CSRm at the Institute of Modern Physics in Lanzhou, China. The measured spectrum covers the energy range of 0-160 eV, including all the dielectronic recombination (DR) resonances associated with Delta N = 0 core excitations. The DR cross sections in this energy range were calculated by a relativistic configuration interaction method using the flexible atomic code (FAC). Radiative recombination (RR) cross sections were obtained from a modified version of the semi-classical Bethe & Salpeter (1957, Quantum Mechanics of One-and Two-Electron 56 Systems (Springer)) formula for hydrogenic ions. The comparison between the measurement and the calculation shows that the present theoretical model still needs to be improved at low collision energies. Temperature dependent plasma recombination rate coefficients were derived from the measured DR rate coefficients in the temperature range of 10(3)-10(8) K and compared with the presently calculated result as well as previous available data in the literature. The experimentally derived data agree well with the theoretical calculations for temperatures where Ni19+ ions form in collisionally ionized plasmas. At lower temperatures typical for photo-ionized plasmas, discrepancies are found beyond the experimental uncertainty, which can be attributed to the disagreement between the measurement and the calculation of the low-lying DR resonances. The present experimental result benchmarks the plasma DR rate coefficients, in particular for temperatures below 10(5) K where the Delta N = 0 DR resonances dominate.
资助项目	National Key R&D Program of China[2017YFA0402300] ; National Natural Science Foundation of China[U1732133] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDPB09-02] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB21030300] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-SLH006] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; CAS President's International Fellowship Initiative (PIFI)
WOS关键词	ELECTRON-ION RECOMBINATION ; IONIZATION EQUILIBRIUM ; PHOTOIONIZED GAS ; SOLAR ; TEMPERATURE ; PLASMAS ; XVIII ; MG ; FE ; NI
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000475840500008
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; CAS President's International Fellowship Initiative (PIFI)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/132976]
专题	中国科学院近代物理研究所
通讯作者	Wen, Wei-Qiang
作者单位	1.Fudan Univ, Inst Modern Phys, Shanghai EBIT Lab, Shanghai 200433, Peoples R China 2.Chinese Minist Educ, Key Lab Appl Ion Beam Phys, Shanghai 200433, Peoples R China 3.Justus Liebig Univ Giessen, Phys Inst 1, Heinrich Buff Ring 16, D-35392 Giessen, Germany 4.PINSTECH, Phys Div, Islamabad 45650, Pakistan 5.Tianshui Normal Univ, Inst Fundamental Phys, Tianshui 741000, Gansu, Peoples R China 6.Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Gansu, Peoples R China 7.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 8.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China 9.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China 10.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Mao, Li-Jun,Ma, Xiao-Ming,Li, Jie,et al. Dielectronic recombination rate coefficients of fluorine-like nickel[J]. ASTRONOMY & ASTROPHYSICS,2019,627:8.
APA	Mao, Li-Jun.,Ma, Xiao-Ming.,Li, Jie.,Tang, Mei-Tang.,Yin, Da-Yu.,...&Zhu, Xiao-Long.(2019).Dielectronic recombination rate coefficients of fluorine-like nickel.ASTRONOMY & ASTROPHYSICS,627,8.
MLA	Mao, Li-Jun,et al."Dielectronic recombination rate coefficients of fluorine-like nickel".ASTRONOMY & ASTROPHYSICS 627(2019):8.