Time-resolved fluorescence of the a 3Π0+ state of BrCl

Abstract

The lifetime and several quenching rates have been measured for the a ³Π₀⁺ state of BrCl by means of laser‐induced time‐resolved fluorescence. The vibrational levels were found to be thermalized so that about 92% of the decay was from the v′=0 and v′=1 levels with a combined observed lifetime of 18.5±3 μsec. Quenching rates for BrCl, Cl₂, He, and air are 33×10³ sec⁻¹ Torr⁻¹, 4×10³ sec⁻¹ Torr⁻¹, 3.8×10³ sec⁻¹ Torr⁻¹, and 53×10³ sec⁻¹ Torr⁻¹, respectively.