Predissociation of Bi2 A(0u+), v'=21-39.
Collisionless lifetimes for Bi2 A(0u+), v'=20-39, J'<or=105 have been measured using pulsed laser induced fluorescence techniques to investigate the effects of predissociation. The observed predissociation rates, Gamma=kpd(v')J(J+1), are quite rapid, ranging from kpd=1.53x10(2) s-1 for v'=21 to 1.5x10(5) s-1 for v'=39. The dense Bi2(A-->X) spectrum required both traditional lifetime measurements and synthetic spectrum fits to laser excitation spectra to determine the full range of observed rates. A single, repulsive potential responsible for the observed A-state predissociation could not be identified to adequately describe the vibrational dependence of the predissociation rates.
Dolezal
Michael W
MW
Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433-7765, USA.
Perram
Glen P
GP