Multiplet Pattern and Assignments of LiIbTransitions

Abstract

The experimental values of the fine and hyperfine energies of the metastable autoionizing $\mathrm{}\left(1s2s2p\right)\mathrm{}{}_{}{}^4{}_{}{}^{}P_{}^o{}_{}{}^{}$ states of Li are used to definitively identify the transitions responsible for the multiplets at 2934 and 3714 Å in the optical spectrum of Li. It is found that the optical lines are due to the radiative decay to the ${}_{}{}^4{}_{}{}^{}P_{}^o{}_{}{}^{}$ state of the lowest-lying states with symmetries ${}_{}{}^4{}_{}{}^{}S_{}^e{}_{}{}^{}$ and ${}_{}{}^4{}_{}{}^{}P_{}^e{}_{}{}^{}$. The intervals between the quartet states and the fine and hyperfine splittings of these states are derived from an analysis of the multiplet structures.