Calculation of spin forbidden decay rates of the 3<i>s</i>3<i>p</i>^{3 5}<i>S</i>⁰₂level in the Si isoelectronic sequence for 15 ⩽<i>Z</i>⩽ 30

Abstract

Lifetimes for the spin forbidden decay of the 3s3p3 5s20 level in the ions with nuclear charge 15 ⩽ Z ⩽ 30 of the Si isoelectronic sequence are calculated in the multiconfiguration optimized potential model and compared with other calculations and observations. When the Hamiltonian is corrected so that the 5S20–3P20 energy splittings equal the observed values, excellent agreement with the few available observed lifetimes is obtained.