Lifetime measurements in theS122andD32,522sequences of indium

Abstract

Natural radiative lifetimes in the $5{s}^{2}\mathrm{ns}^{2}S_{\frac{1}{2}}$ and $5{s}^{2}\mathrm{nd}^{2}D_{\frac{3}{2},\frac{5}{2}}$ ($n\ensuremath{\le}20$) sequences of indium have been measured using pulsed laser excitation of an atomic beam. The uv pulses were produced by a YAG-pumped, or alternatively, an excimer-pumped dye-laser system. While the $S$-state lifetimes show a normal ${({n}^{*})}^{3}$ behavior, the $D$ sequences are strongly perturbed. The lifetimes of the $5s5{p}^{2}^{4}P$ states were found to be $J$ dependent.