TY - JOUR
T1 - Dissociation dynamics of NH3(Ã1A″2). Experiment and theory
AU - Ashfold, Michael N R
AU - BENNETT, CL
AU - DIXON, RN
PY - 1986
Y1 - 1986
N2 - The spectroscopy and predissociation of the vibronic levels of the Ã1A″2 excited states of NH3 and ND3 have been studied via Ã-X dispersed emission spectra, C′-à dispersed emission spectra and C′-à stimulated emission pumping, in each case following two-photon excitation to a selected intermediate level. The predissociation lifetimes span more than two orders of magnitude. The lowest levels predissociate by H(D) atom quantum tunnelling, the higher levels by vibrational rearrangement. A model calculation is presented to illustrate this mechanism for the v1= 1 levels of the à state, which are very short-lived.
AB - The spectroscopy and predissociation of the vibronic levels of the Ã1A″2 excited states of NH3 and ND3 have been studied via Ã-X dispersed emission spectra, C′-à dispersed emission spectra and C′-à stimulated emission pumping, in each case following two-photon excitation to a selected intermediate level. The predissociation lifetimes span more than two orders of magnitude. The lowest levels predissociate by H(D) atom quantum tunnelling, the higher levels by vibrational rearrangement. A model calculation is presented to illustrate this mechanism for the v1= 1 levels of the à state, which are very short-lived.
U2 - 10.1039/DC9868200163
DO - 10.1039/DC9868200163
M3 - Article (Academic Journal)
VL - 82
SP - 163
EP - 175
JO - Faraday Discussions of the Chemical Society
JF - Faraday Discussions of the Chemical Society
SN - 0301-7249
ER -