He like energy levels, TPs (trac #364)

reported by: @CloudyLex

Title:  
Energy levels and transition rates for helium-like ions with Z = 10-36
Authors:    
Si, R.; Guo, X. L.; Wang, K.; Li, S.; Yan, J.; Chen, C. Y.; Brage, T.; Zou, Y. M.
Affiliation:    

AA(Division of Mathematical Physics, Department of Physics, Lund University, 
Box 118, 221 00, Lund, Sweden; Shanghai EBIT Lab, Institute of Modern Physics, 
Department of Nuclear Science and Technology, Fudan University, Shanghai, 
200433, PR China; Applied Ion Beam Physics Laboratory, Fudan University, Key 
Laboratory of the Ministry of Education, Shanghai, 200433, PR China), 
AB(Shanghai EBIT Lab, Institute of Modern Physics, Department of Nuclear 
Science and Technology, Fudan University, Shanghai, 200433, PR China; Applied 
Ion Beam Physics Laboratory, Fudan University, Key Laboratory of the Ministry of 
Education, Shanghai, 200433, PR China), AC(Hebei Key Lab of Optic-electronic 
Information and Materials, The College of Physics Science and Technology, Hebei 
University, Baoding, 071002, PR China), AD(Institute of Applied Physics and 
Computational Mathematics, Beijing, 100088, PR China), AE(Institute of Applied 
Physics and Computational Mathematics, Beijing, 100088, PR China; Center for 
Applied Physics and Technology, Peking University, Beijing, 100871, PR China; 
Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, 
Shanghai, 200240, PR China), AF(Shanghai EBIT Lab, Institute of Modern 
Physics, Department of Nuclear Science and Technology, Fudan University, 
Shanghai, 200433, PR China chychen@fudan.edu.cn; Applied Ion Beam Physics 
Laboratory, Fudan University, Key Laboratory of the Ministry of Education, 
Shanghai, 200433, PR China), AG(Division of Mathematical Physics, Department 
of Physics, Lund University, Box 118, 221 00, Lund, Sweden 
tomas.brage@fysik.lu.se), AH(Shanghai EBIT Lab, Institute of Modern Physics, 
Department of Nuclear Science and Technology, Fudan University, Shanghai, 
200433, PR China; Applied Ion Beam Physics Laboratory, Fudan University, Key 
Laboratory of the Ministry of Education, Shanghai, 200433, PR China)

Publication:    

Astronomy & Astrophysics, Volume 592, id.A141, 10 pp. (A&A Homepage)

Publication Date:   

08/2016

Origin: 
EDP Sciences
Astronomy Keywords: 
atomic data, atomic processes
DOI:    
10.1051/0004-6361/201628656
Bibliographic Code: 
2016A&A...592A.141S
Abstract

Aims: Helium-like ions provide an important X-ray spectral diagnostics in 
astrophysical and high-temperature fusion plasmas. An interpretation of the 
observed spectra provides information on temperature, density, and chemical 
compositions of the plasma. Such an analysis requires information for a wide 
range of atomic parameters, including energy levels and transition rates. Our aim 
is to provide a set of accurate energy levels and transition rates for helium-like 
ions with Z = 10-36. 

Methods: The second-order many-body perturbation theory (MBPT) was adopted 
in this paper. To support our MBPT results, we performed an independent 
calculation using the multiconfiguration Dirac-Hartree-Fock (MCDHF) method. 

Results: We provide accurate energies for the lowest singly excited 70 levels 
among 1snl(n ? 6,l ? (n-1)) configurations and the lowest doubly excited 250 
levels arising from the K-vacancy 2ln'l'(n' ? 6,l' ? (n'-1)) configurations of helium-
like ions with Z = 10-36. Wavelengths, transition rates, oscillator strengths, and 
line strengths are calculated for the E1, M1, E2, and M2 transitions among these 
levels. The radiative lifetimes are reported for all the calculated levels. 

Conclusions: Our MBPT results for singly excited n ? 2 levels show excellent 
agreement with other elaborate calculations, while those for singly excited n ? 3 
and doubly excited levels show significant improvements over previous 
theoretical results. Our results will be very helpful for astrophysical line 
identification and plasma diagnostics.

Full Tables 1 and 2 are only available at the CDS via anonymous ftp to cdsarc.u-
strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?
J/A+A/592/A141

Migrated from https://www.nublado.org/ticket/364

{
    "status": "new",
    "changetime": "2019-02-04T13:02:49Z",
    "_ts": "1549285369825011",
    "description": "{{{\nTitle:\t\nEnergy levels and transition rates for helium-like ions with Z = 10-36\nAuthors:\t\nSi, R.; Guo, X. L.; Wang, K.; Li, S.; Yan, J.; Chen, C. Y.; Brage, T.; Zou, Y. M.\nAffiliation:\t\n\nAA(Division of Mathematical Physics, Department of Physics, Lund University, \nBox 118, 221 00, Lund, Sweden; Shanghai EBIT Lab, Institute of Modern Physics, \nDepartment of Nuclear Science and Technology, Fudan University, Shanghai, \n200433, PR China; Applied Ion Beam Physics Laboratory, Fudan University, Key \nLaboratory of the Ministry of Education, Shanghai, 200433, PR China), \nAB(Shanghai EBIT Lab, Institute of Modern Physics, Department of Nuclear \nScience and Technology, Fudan University, Shanghai, 200433, PR China; Applied \nIon Beam Physics Laboratory, Fudan University, Key Laboratory of the Ministry of \nEducation, Shanghai, 200433, PR China), AC(Hebei Key Lab of Optic-electronic \nInformation and Materials, The College of Physics Science and Technology, Hebei \nUniversity, Baoding, 071002, PR China), AD(Institute of Applied Physics and \nComputational Mathematics, Beijing, 100088, PR China), AE(Institute of Applied \nPhysics and Computational Mathematics, Beijing, 100088, PR China; Center for \nApplied Physics and Technology, Peking University, Beijing, 100871, PR China; \nCollaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, \nShanghai, 200240, PR China), AF(Shanghai EBIT Lab, Institute of Modern \nPhysics, Department of Nuclear Science and Technology, Fudan University, \nShanghai, 200433, PR China chychen@fudan.edu.cn; Applied Ion Beam Physics \nLaboratory, Fudan University, Key Laboratory of the Ministry of Education, \nShanghai, 200433, PR China), AG(Division of Mathematical Physics, Department \nof Physics, Lund University, Box 118, 221 00, Lund, Sweden \ntomas.brage@fysik.lu.se), AH(Shanghai EBIT Lab, Institute of Modern Physics, \nDepartment of Nuclear Science and Technology, Fudan University, Shanghai, \n200433, PR China; Applied Ion Beam Physics Laboratory, Fudan University, Key \nLaboratory of the Ministry of Education, Shanghai, 200433, PR China)\n\nPublication:\t\n\nAstronomy & Astrophysics, Volume 592, id.A141, 10 pp. (A&A Homepage)\n\nPublication Date:\t\n\n08/2016\n\nOrigin:\t\nEDP Sciences\nAstronomy Keywords:\t\natomic data, atomic processes\nDOI:\t\n10.1051/0004-6361/201628656\nBibliographic Code:\t\n2016A&A...592A.141S\nAbstract\n\n\nAims: Helium-like ions provide an important X-ray spectral diagnostics in \nastrophysical and high-temperature fusion plasmas. An interpretation of the \nobserved spectra provides information on temperature, density, and chemical \ncompositions of the plasma. Such an analysis requires information for a wide \nrange of atomic parameters, including energy levels and transition rates. Our aim \nis to provide a set of accurate energy levels and transition rates for helium-like \nions with Z = 10-36. \n\nMethods: The second-order many-body perturbation theory (MBPT) was adopted \nin this paper. To support our MBPT results, we performed an independent \ncalculation using the multiconfiguration Dirac-Hartree-Fock (MCDHF) method. \n\nResults: We provide accurate energies for the lowest singly excited 70 levels \namong 1snl(n ? 6,l ? (n-1)) configurations and the lowest doubly excited 250 \nlevels arising from the K-vacancy 2ln'l'(n' ? 6,l' ? (n'-1)) configurations of helium-\nlike ions with Z = 10-36. Wavelengths, transition rates, oscillator strengths, and \nline strengths are calculated for the E1, M1, E2, and M2 transitions among these \nlevels. The radiative lifetimes are reported for all the calculated levels. \n\nConclusions: Our MBPT results for singly excited n ? 2 levels show excellent \nagreement with other elaborate calculations, while those for singly excited n ? 3 \nand doubly excited levels show significant improvements over previous \ntheoretical results. Our results will be very helpful for astrophysical line \nidentification and plasma diagnostics.\n\nFull Tables 1 and 2 are only available at the CDS via anonymous ftp to cdsarc.u-\nstrasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?\nJ/A+A/592/A141\n\n}}}",
    "reporter": "gary",
    "cc": "",
    "resolution": "",
    "time": "2016-08-26T21:58:46Z",
    "component": "atomic/molecular data base",
    "summary": "He like energy levels, TPs",
    "priority": "good to do",
    "keywords": "",
    "version": "trunk",
    "milestone": "no milestone",
    "owner": "nobody",
    "type": "enhancement"
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He like energy levels, TPs (trac #364) #366