Molecular beam photodissociation of TlI: Bond energy and state symmetry

Abstract

A beam of TlI is dissociated with a laser at 299.0 nm. The time of flight of the iodine atoms leads to a bond dissociation energy of 62.1±0.9 kcal/mol. Fragment angular distribution measurements made with a high pressure lamp show that both the 302.5 and the 380 nm bonds of TlI are transitions of mixed parallel and perpendicular symmetries.