State to state photodissociation dynamics of D2O in the B band

State-to-state photodissociation dynamics of D2O in the B band has been investigated using the recently developed diabatic potential energy surfaces. Quantum dynamical calculations including the electronic (X) over tilde and (B) over tilde states were carried out using a Chebyshev real wave packet method. The non-adiabatic channel via the DOD conical intersection is facile, direct, and fast, which produces rotationally hot and vibrationally cold OD((X) over tilde) product. On the other hand, the adiabatic channel on the excited state, leading to the OD((X) over tilde) product, is dominated by long-lived resonances, which depend sensitively on the potential energy surface. The calculated absorption spectra, product state distributions, branching ratios, and angular distributions are in reasonably good agreement with the latest experimental results. (C) 2013 AIP Publishing LLC.