The vibrational predissociation of HeBr2: a wavepacket study

We present a theoretical study of the vibrational predissociation of the Van der Waals complex HeBr2, using a time-dependent quantum mechanical approach with a symplectic integrator propagator, for total angular momentum J = 0. This method gives not only vibrational predissociation lifetimes, resonance energies and rotational product distributions but also information on the dynamics of the system. A comparison is made with time-independent and experimental results, for initial Br2 excitation level v=8, 10, 12, and good agreement is found.