Abstract
The photodissociation dynamics of the [Btilde]-state of water has been studied using the classical trajectory method. Two possible non-adiabatic dissociation processes are considered. The internal state distributions of the final product OH are obtained and compared with experimental results in order to determine the relative importance of the two dissociation pathways, i.e. [Btilde]/Ã and [Btilde]/[Xtilde] channels. Our results favour the [Btilde]/Ã pathway.