Atomic structure for carbon-like ions from Na <scp>vi</scp> to Ar <scp>xiii</scp>

نویسندگان

چکیده

ABSTRACT We have calculated the energy levels, oscillator strengths, and transition probabilities for eight carbon-like ions (Na vi, Mg vii, Al viii, Si ix, P x, S xi, Cl xii Ar xiii) using Hartree–Fock pseudo-relativistic (HFR) Thomas–Fermi–Dirac–Amaldi (TFDA) approaches. used configuration expansions containing configurations, namely 2s2 2p2, 2s 2p3, 2p 3s, 3p, 3d, 4s, 4p, 5s. For each of considered we obtained 59 a number which are not in National Institute Standards Technology (NIST) data base. compared our results with critically selected experimental from NIST calculations made multiconfiguration (MCHF) method. weighted strengths two methods (HFR TFDA) 2p2 2p3 configurations C-like here. analysed atomic structure parameter trends, allowed us to find missing belonging an isoelectronic sequence. The here good agreement Because emission absorption features often density temperature diagnostics various plasmas astrophysics, studies solar corona, including flares, coronae other stars ionized outflows active galactic nuclei etc., will be useful improving plasma modelling, particular X-ray Universe.

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ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2021

ISSN: ['0035-8711', '1365-8711', '1365-2966']

DOI: https://doi.org/10.1093/mnras/stab2265