PHOTOTHERMAL DETECTION OF THE ONSET OF PHOTOCHEMICAL NUCLEATION (LASER SNOW) IN VAPORS.

Abstract

Summary form only given. It is believed that photonucleation should result in a large amount of heat released at the excitation laser beam due, for example, to heat of condensation and hence should be detectable by noncontact photothermal means. The authors report an experiment for such detections by using thermal lensing (TL) and opto-acoustic laser-beam deflection (OLD).