The lifetime of the A2Sigmau+ state of the N3 radical.
The lifetime of the A 2Sigmau+ state of N3 has been determined from line broadening in the rotationally resolved laser-induced fluorescence (LIF) spectrum of the A 2Sigmau+-X 2Pig transition. N3 radicals, produced by fluorine atom abstraction from HN3, were probed with an intracavity doubled ring laser operating near 272 nm. Careful examination of the LIF spectrum indicates a significant Lorentzian component to the line shape due to a rapid predissociation in the A 2Sigmau+ state. The predissociation lifetime is found to be 132+/-21 ps for the 000 vibrational level and 64+/-10 ps for the 010 level. The short lifetime is consistent with the low intensity of the LIF signal especially for the 010-010 hot band.
Brazier
Christopher R
CR
Department of Chemistry and Biochemistry, California State University (CSU) Long Beach, Long Beach, California 90840, USA. cbrazier@csulb.edu