Ω doubling in 1gstate and electronic transition moments forB0+utowards 0+gand 1g(3P2) states of iodine

Abstract
The 1 g and 0+ g (3 P 2) ionic states of iodine interact via the rotational hamiltonian. The resulting Ω doubling in the 1 g state is studied in detail. A value of 103 is deduced for the ratio of the transition probabilities of the 0+ g B and 1 g B transitions. A complete interpretation of their relative intensities involves saturation effects which are clearly observed for the 0+ g B transition. The results give a complete explanation as to why the 0+ g state was the only one to be excited in this spectral region by former workers.