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Full-dimensional quantum dynamics of A-state photodissociation of ammonia: absorption spectra
Wenzhen Lai1, Shi Ying Lin, Daiqian Xie
1Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
Abstract:
Full-dimensional quantum dynamics of the A-state photodissociation of NH(3) and ND(3) is characterized on potential energy surfaces recently developed by Li et al. [Theor. Chem. Acc. 118, 9 (2007)]. The A<--X absorption spectra of the two isotopomers were obtained for several vibrational levels on the ground electronic state. The calculated positions and lifetimes of low-lying umbrella resonances on the excited A electronic state are found to reproduce experimental trends and shed light on the multidimensional dynamics. The agreement with measured spectra is reasonable, but assignment of some individual features remains incomplete.
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