Oscillator strengths for the resonance transition in Fe15+

Summary We report Hartree-Fock and configuration-interaction calculations of both the length and velocity forms of the oscillator strengths for the resonance excitation 1s ²2s ² p ⁶3s ² S _J ^e →1s ²2s ²2p ⁵3s ^{2 2} P _J ⁰ , transition, which leads to autoionization (Auger transition), in the Fe¹⁵⁺ ion of the sodium isoelectronic sequence both inLS and intermediate coupling schemes. Comparison is made with available results. A part of this work was done while the author was Research Director and Professor, CNRS Laboratory, University of Paris-Sud, Paris and Observatoire de Paris, Meudon, Paris, France.