Beam-foil spectroscopy of Se IV, V, and VI

Abstract

Six new transitions are assigned in Se V, resulting in the classification of three new levels: 4s4d 1 D, 4s5s 1 S, and 4s5p 1 P 0 . Lifetimes and multiplet f-values are presented for the 4s 2 4d 2 D, 4s4p 2 2 P, 4s4p 2 2 S, and 4s4p 2 2 D terms of Se IV, the 4s5s 3 S, 4s4d 3 D, 4s4d and 4p 2 1 D, 4s4p 1 P 0 , and 4p 2 3 P terms of Se V and the 5s 2 S, 4d 2 D, and 4p 2 P 0 terms of Se VI. The cascade repopulation problems were analyzed by using the ANDC method on the terms 4s4p 1 P 0 of Se V and 4p 2 P 0 of Se VI.