RelativisticfValues for the Resonance Transitions of Li- and Be-Like Ions

Abstract

Relativistic Hartree-Fock calculations indicate that the dipole oscillator strengths for the $2s\to 2p_{\frac{3}{2}}$ and $2s\to 3p_{\frac{3}{2}}$ transitions of the Li sequence and those for the $2s^2{}_{}{}^1{}_{}{}^{}S\to 2s2p_{\frac{3}{2}}{P}_1$ transitions of the Be sequence deviate appreciably for $Z>\mathrm{}40\mathrm{}$ from values extrapolated from low-$Z$ ions.