Abstract
The fluorescence lifetime and quenching cross sections of several specifically excited vibrational and rotational states in the bromine B 3Πou+ state have been measured near the dissociation limit. The lifetime is found to depend sharply upon J′ and v′ allowing the relationship between predissociation rates and quantum states to be examined in detail. Lifetimes are found to decrease monotonically as the dissociation limit is approached. However, one state within a few wavenumbers of the limit is found to reverse the monotonically decreasing series. Quenching cross sections are found to increase systematically as the limit is approached. Collisional energy transfer between specific quantum states is observed, but does not interfere with lifetime measurements.
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