Radiative decay of HeLi+(b3[formula omitted

Abstract

Radiative lifetimes of the ro-vibrational bound states of HeLi+(b3∑+) 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 1.30×10-6s of the ground vibrational state. With increasing vibration excitations the radiative lifetimes slightly increase, but keep below 10-5s for the next 17 vibrational states, then they start to increase more rapidly up to 2.41×10-2s 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.