PHOTODISSOCIATION OF CBRCL3 AT 248 NM BY TRANSLATIONAL SPECTROSCOPY

The photodissociation of CBrCl3 at 248 nm has been studied by translat ional spectroscopy. The primary dissociation process is shown to produ ce exclusively CCl3 and Br with an average translational energy of 20 kcal/mol. From the measured anisotropy parameter beta=-0.4+/-0.2, CBrC l3 undergoes a simple C-Br bond scission after ''citation via an E<--A 1 transition polarized perpendicular to this bond. A secondary dissoci ation process from CCl3 by absorbing an additional photon is also obse rved at high laser powers.