Photodissociation of vibrationally excited

Wigner distribution function for excited states has negative parts. On the other hand, the extension of the semiclassical theory, established for onedimensional systems, is not straightforward especially if the two degrees of freedom are appreciably coupled, t 

---

In particular, Shapiro and others calculated state-to-state photodissociation cross sections from vibrationally excited states of HCN and DCN [58], N2O [59], and O3 [60]. Eor instance, the detailed product-vibrational state distributions and absorption spectra of HCN(DCN) were compared [58]. These results were obtained employing a half-collision approximation, where the photodissociation could be depicted as consisting of two steps, that is, absorption of the photon and the dissociation, as well as an exact numerical integration of the coupled equations. In particular, it was predicted that large isotope effects can be obtained in certain regions of the spectrum by photodissociation of vibrationally excited molecules. 

Photodissociation of vibrationally excited 02 (X2ITg) with v > 4 (process Ilia) accounts for approximately half of the 0+ signal, while the other half comes from O ionization (process IV). These fractions agree also with the observed 02 0+ of 2 1. Because the signals are already scaled using the O channels, we conclude that photodissociation of all vibrational levels of 02 (X2rg with v > 4 (the energetic limit) is essentially complete. This result... 

Vander Wal, R.L., Scott, J.L., and Crim, F.F. (1991). State resolved photodissociation of vibrationally excited water Rotations, stretching vibrations, and relative cross sections, J. Chem. Phys. 94, 1859-1867. 

Weide, K., Hennig, S., and Schinke, R. (1989). Photodissociation of vibrationally excited water in the first absorption band, J. Chem. Phys. 91, 7630-7637. 

Bach A, Hutchison JM, Holiday RJ, Grim FF (2003) Competition between adiabatic and nonadiabatic pathways in the photodissociation of vibrationally excited ammonia. J Phys... 

The reaction of DN3 along its X A surface requires the absorption of IR photons and shows product state selectivity [2]. The overtone photodissociation of vibrationally excited XN3 (X = H, D) under collisionless conditions proceeds via the reaction channels ... 

---