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Theoretical investi...
Theoretical investigation of energy levels and transition data for S II, Cl III, Ar IV
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- Rynkun, P. (författare)
- Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, Vilnius, 10222, Lithuania
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- Gaigalas, G. (författare)
- Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, Vilnius, 10222, Lithuania
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- Jönsson, Per (författare)
- Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)
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Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av 3, Vilnius, 10222, Lithuania Institutionen för materialvetenskap och tillämpad matematik (MTM) (creator_code:org_t)
- 2019-03-26
- 2019
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 623
- Relaterad länk:
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https://mau.diva-por... (primary) (Raw object)
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visa fler...
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Aims. The aim of this work is to present accurate and extensive results of energy spectra and transition data for the S II, Cl III, and Ar IV ions. These data are useful for understanding and probing physical processes and conditions in various types of astrophysical plasmas. Methods. The multiconfiguration Dirac-Hartree-Fock (MCDHF) and relativistic configuration interaction (RCI) methods, which are implemented in the general-purpose relativistic atomic structure package GRASP2K, are used in the present work. In the RCI calculations the transverse-photon (Breit) interaction, the vacuum polarization, and the self-energy corrections are included. Results. Energy spectra are presented comprising the 134, 87, and 103 lowest states in S II, Cl III, and Ar IV, respectively. Energy levels are in very good agreement with NIST database recommended values and associated with smaller uncertainties than energies from other theoretical computations. Electric dipole (E1), magnetic dipole (M1), and electric quadrupole (E2) transition data are computed between the above states together with the corresponding lifetimes. Based on internal validation, transition rates for the majority of the stronger transitions are estimated to have uncertainties of less than 3%.
Nyckelord
- atomic data
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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