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C.R. Sherwood, K.A. Hanold, M.C. Garner, K.M. Strong and R.E. Continetti, "Translational Spectroscopy Studies of the Photodissociation Dynamics of O4-.", J. Chem. Phys. 105, 10803-10811 (1996). |
An investigation of the photodissociation dynamics of the dimer anion O4- at 523.6, 349.0 and 261.8 nm is reported. Product translational energy and angular distributions have been obtained using photofragment translational spectroscopy in a fast ion beam. At all wavelengths photodissociation ( O4- + hv --> O2 + O2 + e-) is observed to proceed via a rapid parallel electronic transition, with the photofragment angular distribution strongly peaked along the laser electric vector. The lowest energy photodissociation channel produces O2 (a singlet Delta gerade) and ground state O2- (X ), indicating that O4- is a doublet anion. The partitioning of energy in the dissociation reveals a complicated wavelength dependence. |