Abstract

Fine structure energies and radiative data namely, transition wavelength, transitions rates, oscillator strength and line strength have been presented for lowest 123 levels of Kr-like W (WXXXIX) by using Multi-Configuration Dirac-Fock (MCDF) method. We have systematically analysed configuration interaction (CI) and convergence in radiative data and Dirac-Coulomb as well as Breit and Quantum electrodynamics (QED) effects of excitation energies. We demonstrate that inclusion of CI and convergence in excitation energies are crucial to attain the accuracy in atomic data. We have also discussed the evaluation of results from two independent codes GRASP and FAC based on MCDF and Distorted Wave (DW). We show that magnetic multipole transitions (M1, M2) are dominant in the contribution of lifetime of 4 s2(1S0) 4p5(2P1) 4f1(2F1)3D1 and 4 s1(2S1) 4p5(2P1) 4d2(3F2)3D2o. The present results are complete, extensive and in good agreement with other results.

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