Photodissociation of benzotrifluoride at 193 nm

Photodissociation of benzotrifluoride at 193 nm was studied in molecular be am by VUV photoionization/multimass ion imaging techniques. Photofragment t ranslational energy distributions corresponding to the F and CF3 eliminatio n were measured. The dissociation rate of benzotrifluoride was measured to be 6.2 x 10(4) s(-1). The experimental result indicated that the highly vib rationally excited benzotrifluoride was formed by internal conversion from an initial excited state to a ground electronic state prior to dissociation .