PHOTOEXCITATION OF REACTION COMPLEXES
MAGUIRE, THOMAS CLAIR
Doctor of Philosophy
Emission at the Na D lines has been observed from the intersection of crossed molecular beams of K and NaCl irradiated by a CW dye laser at wavelengths from 590 nm to 735 nm. The three-beam signal exhibits a threshold near 735 nm and is linearly dependent on the laser and molecular beam intensities. This three-beam signal has been observed under experimental conditions in which all two beam signals are accounted for, and is attributed to the formation of Na* by photoexcitation of the KNaCl reaction complex. The effective two-body cross section for the process is approximately 10('-21) cm('2) in a laser field of 1.5 kW/cm('2).