Eur. Phys. J. D 23, 5-13 (2003)
https://doi.org/10.1140/epjd/e2003-00008-x

Theoretical transition probabilities and lifetimes in nickel–like Se⁶⁺, Y¹¹⁺ and Sn²²⁺ ions

¹ Fachbereich Physik, Universität Kassel, Heinrich–Plett–Str. 40, 34132 Kassel, Germany
² Department of Physics, Northwest Normal University, Lanzhou 730070, P.R. China

Corresponding author: ^a fricke@physik.uni-kassel.de

Received: 23 January 2002
Revised: 16 August 2002
Published online: 21 January 2003

Abstract

The 17 levels of the , and configurations, and the electric–dipole transitions among these levels are calculated for the three nickel–like ions Se⁶⁺, Y¹¹⁺ and Sn²²⁺ by using large–scale multiconfiguration Dirac–Fock wavefunctions. From these computations, the excitation energies and transition probabilities as well as the lifetimes of levels are derived, including all dominant effects of relativity, correlation and of the rearrangement of the electron density within the same framework. Comparison is made with the scarce number of experimental data and previous semi–empirical computations.