Relativistic effects on transition probabilities in the Li and Be isoelectronic sequences

Relativistic Many-Body Calculations of Transition Probabilities for the 2l12l2[LSJ]-2l32l4[L'S'J'] Lines in Be-like Ions

“…Relativistic wave functions were used to calculate oscillator strengths for Be-like ions by Kim and Desclaux [29] and by Armstrong, Fielder, and Lin [30]. These wave functions were obtained from multiconÐguration DiracÈ HartreeÈFock (MDHF) calculations including 2s2 and 2p2 conÐgurations.…”

WAVELENGTHS AND OSCILLATOR STRENGTHS OF TRANSITIONS IN Kr XXXIII AND Kr XXXIV

“…Members of these isoelec.tronic sequences appear prominently in the spectra of hot plasmas [1], their wavelengths are used to identify the ions present and their oscillator strengths are used to determine the ion concentra tion [2] and the electron temperature and density [3]. Further, since krypton is the highest z system for which measurements of this type have been made, these data provide an excellent test of relativistic effects [4]- [7] and extrapolation techniques [8].…”

Spin-forbidden transitions between 2p 2 and 2s2p states in the beryllium isoelectronic sequence

“…Previous theoretical values have been obtained by Miihlethaler and Nussbaumer [2], Weiss [3], Victorov and Soforonova [7], Nussbaumer and Storey [12]. Unfortunately, there are still no experimental results for comparison.…”

“…The study of relativistic effects in the beryllium isoelectronic sequence has attracted much attention from theoreticians (Mtihlethaler and Nussbaumer [1], Armstrong et al [2], Weiss [3], Kim and Desclau [4], Lin and Johnson [5], Cheng and Johnson [6], Victorov and Sofronova [7], Glass and Hibbert [8], Glass [9,10], Nussbaumer and Storey [11,12], Edltn [13]). The aim has been the development of a theory for calculating wavelengths and transition probabilities accurately.…”