Abstract
Radiative lifetimes of the ro-vibrational bound states of HeLi+(b(3)Sigma(+)) are calculated quantum-mechanically when both bound-bound and bound-free processes are taken into account. The calculations are restricted to the initial states with low rotational quantum numbers.
For the rotationless molecular ion, the shortest lifetime is 1.30 x 10(-6) s of the ground vibrational state. With increasing vibration excitations the radiative lifetimes slightly increase, but keep below 10(-5) s for the next 17 vibrational states, then they start to increase more rapidly up to 2.41 x 10(-2) s for the highest vibrational state.
The radiative lifetimes also tend to slightly prolong with increasing rotational excitations but stay on the same magnitude for the low rotational quantum numbers.