Time-resolved measurements of rotational energy transfer within the Ã2A1 state of NH2
Abstract
Time- and energy-resolved spectroscopy of the laser-induced fluorescence of à state NH2 has allowed us to follow the evolution of the rotational population distribution when pumping in a single rovibronic transition. The primary scattering process shows an almost exclusive propensity for inelastic transitions with |ΔN|⩽2. The non-exponential decay observed in many experiments has been interpreted as arising from reversible transfer between fluorescent levels of the Ã, 2A1 state and high close-lying levels of the X, 2B1 ground state.