Table of Contents
Laser Chemistry
Volume 5, Issue 3, Pages 143-156

Molecular Beam Opto-thermal Study of the Multiple-photon Infrared Excitation of CF3Br

1Dipartimento di Fisica dell' Università di Trento, Povo 38050, (TN), Italy
2Istituto per la Ricerca Scientifica e Tecnologica in Trento, Povo 38050, (TN), Italy

Received 13 April 1984; Accepted 6 June 1984

Copyright © 1985 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The multiple-photon excitation (MPE) of CF3Br has been studied in strictly collisionless conditions by means of the molecular beam optothermal technique. The MPE spectrum shows strong structures which have been attributed to different orders of multiple-photon resonances. The experimental results have been compared with an available theoretical calculation based on the “heat-bath feed-back” model. The effect of the rotational population and of the vibrationally excited “hot bands” on the MPE yield is discussed.