Cesium halide photodissociation cross sections

The cross sections for the photodissociation of CsCl, CsBr and CsI have been measured using a cesium halide seeded shock tube. These measurements were made by using the ratio of two absorption signals: one in the incident and one in the reflected shock region. The cesium halide was the absorption species in the incident shock region and a halogen negative ion species absorbed in the reflected shock region. Previously measured and calculated halogen negative ion photodetachment cross sections were used in calculating the cesium halide photodissociation cross section. Measurements were made between 4000 and 2000 Å at 1900°K.