Radiative lifetime of the A 2Σ+ state of SnF

Abstract
A pulsed dye laser has been used to measure the radiative lifetime and some quenching rates for the A 2Σ+ state of SnF. Ground state SnF was produced by reacting tin vapor with molecular fluorine. The average radiative lifetime of the v′=0,1,2, and 3 levels of the A 2Σ+ state is 3.2±0.3 μsec. The quenching of the A 2Σ+ state by species in the reaction: He, Sn, F2, and SnF is very inefficient.