New investigation of the photodissociation of the HBr molecule: total cross-section, anisotropy parameter and dependence of the spin–orbit branching on the ground state vibrational level Original Research Article

We report new calculations on the photodissociation of the HBr molecule within a time-independent framework. This work extends our previous study to the dependence on excitation wavelength of both the total cross-section and the anisotropy parameter which characterizes the contribution of the parallel and the perpendicular transitions in the fragmentation process. In addition, we study the dependence of the spin–orbit branching ratio σ(2P1/2)/σ(2P3/2) on the initial vibrational level (v″=1 and 2) of the ground X 1Σ+ state.