Using vibrational branching ratios to probe initial and final state effects in molecular photoionization

Abstract

Recent computed and experimental results for ICN, BF3 and C6F6 will be presented. In ICN we consider the ionization leading to the X2 -1/2,3/2 states of ICN+. We show how the geometry dependence of the initial state orbital can be studied using vibrational branching ratios. In C6F6, we consider the excitation of the effects of two prominent shape resonances on the symmetric stretching modes in the photoionization leading to the C 3B2u state of the ion. In BF3, the excitation of both the symmetric stretching and the degenerate asymmetric stretching modes are considered in the photoionization leading to the E2A1' state of the ion.