Radiative transition wavelengths and lifetimes for the quintet states in Be-like ions

Abstract

Radiative properties of 1s2l2l′3l′′ 5Le,o (l = s, p; l′ = p; l″ = s, p, d; L = P, D) states are studied using multi-configuration Rayleigh–Ritz method from Z = 7 to 14. Absolute energies including mass polarization and relativistic corrections are reported for the first time. The contribution of quantum electrodynamics and nuclear field shifts to the total energy is estimated. The variation of the fine structure splitting values with the configuration structure and with the nuclear charge number Z is discussed. The oscillator strengths and the radiative transition rates are calculated using nonrelativistic wave functions. The calculated wavelengths and lifetimes are compared with the theoretical and experimental references.