Excitation energies and oscillator strengths for the 1s 2 2s 2 2p 6 3s 2 3p 6 3d 2 D e →1s 2 2s 2 2p 6 3s 2 3p 5 3d 2 2 P o , 2 D o , 2 F o transitions in V4 +

Abstract

We have calculated the excitation energies ( E) and optical oscillator strengths (OOS), of both length ( f L ) and velocity ( f V ) forms, for the 1s 2 2s 2 2 p 6 3s 2 3 p 6 3d 2 D e → 1s 2 2s 2 2 p 6 3s 2 3 p 5 3d 2 2 P o , 2 D o , 2 F o transitions in V 4+ ion of the potassium isoelectronic sequence by employing multiconfiguration Hartree-Fock (MCHF) method exactly in the same way as we did in our earlier work (Tiwary et al, Pramana -J. Phys. 46, 381 (1996)). We have compared the available relevant experimental data and our earlier theoretical results obtained by employing the configuration interaction (CI) method (Tiwary et al, J. Phys. B: At. Mol. Phys. 16, 2457). Our present investigation clearly demonstrates that the MCHF method is more accurate than the CI method.