Eur. Phys. J. D (2014) 68: 42
https://doi.org/10.1140/epjd/e2014-40173-1

Regular Article

Relativistic configuration interaction calculations for the K_α X-ray transitions of Co XV to Co XXVI ions

School of Science and Technology, Qiongzhou University, Sanya, Hainan, 572022, P.R. China

^a e-mail: lhhao1020@163.com

Received: 27 March 2013
Received in final form: 2 July 2013
Published online: 4 March 2014

Abstract

Relativistic configuration interaction calculations with the inclusion of the Breit interaction, quantum electrodynamics (QED) and finite nuclear mass corrections have been carried out in the extended optimal level scheme using multiconfiguration Dirac-Fock wave functions on the wavelengths, electric dipole rates, oscillator strengths and line strengths of cobalt ions with a single vacancy in the K shell. The calculated values are compared with the other available data on He-like to Be-like cobalt and are found to be in very good agreement with them. This confirms the present calculations. We predict new data for several levels where no other theoretical and/or experimental results are available. These data provide reference values for level lifetimes, charge state distribution and the average charge of cobalt plasmas.