C. Kalyanaraman et N. Sathyamurthy, PHOTODISSOCIATION AND PREDISSOCIATION PROCESSES IN OH - A TIME-DEPENDENT QUANTUM-MECHANICAL STUDY, Chemical physics, 187(1-2), 1994, pp. 219-226
Photodissociation from the ground vibrational and ground electronic st
ate (X2PI) and spin-orbit induced predissociation from the A 2SIGMA+ s
tate of OH have been studied using the time-dependent quantum mechanic
al approach. Photodissociation cross sections computed thus are in acc
ord with the time-independent quantal results and are comparable to th
e experimental results. Predissociation linewidths (GAMMA) computed us
ing the wavepacket golden rule treatment corresponding to upsilon' = 1
-7 of A 2SIGMA+ state are also in agreement with most of the earlier t
heoretical results. For upsilon' = 1-3, there is a general agreement b
etween experiment and theory but for upsilon' = 4, the difference is s
ubstantial. For upsilon' = 5-7, there are no experimental results avai
lable. The results obtained from our calculations indicate that the in
clusion of R-dependence of the spin-orbit coupling plays an important
role in deciding the upsilon' dependence of GAMMA.