Calculations with spectroscopic accuracy: energies, transition rates, and Landé g_J-factors in the carbon isoelectronic sequence from Ar XIII to Zn XXV^⋆,⋆⋆

¹ Materials Science and Applied Mathematics, Malmö University, 21120 Malmö, Sweden
e-mail: jorgen.ekman@mah.se
² Vilnius University, Institute of Theoretical Physics and Astronomy, A. Goštauto 12, 01108, Vilnius, Lithuania
³ Chimie Quantique et Photophysique, CP160/09, Université Libre de Bruxelles, Av. F.D. Roosevelt 50, 1050 Brussels, Belgium
⁴ Department of Electrical Engineering and Computer Science, Box 1679B, Vanderbilt University, TN 37235, USA

Received: 1 December 2013
Accepted: 5 February 2014

Abstract

Extensive self-consistent multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations and subsequent relativistic configuration interaction calculations are performed for 262 states belonging to the 15 configurations 2s²2p², 2s2p³, 2p⁴, 2s²2p3l, 2s2p²3l, 2p³3l and 2s²2p4l(l = 0,1,2) in selected carbon-like ions from Ar XIII to Zn XXV. Electron correlation effects are accounted for through large configuration state function expansions. Calculated energy levels are compared with existing theoretical calculations and data from the Chianti and NIST databases. In addition, Landé g_J-factors and radiative electric dipole transition rates are given for all ions. The accuracy of the calculations are high enough to facilitate the identification of observed spectral lines.