Table of Contents
Laser Chemistry
Volume 6, Issue 1, Pages 61-84

The Physical Origin of Fitting Laws for Rotational Energy Transfer

1School of Molecular Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, UK
2Laboratoire de Photophysique Moléculaire CNRS, Université de Paris-Sud, Bâtiment 213, Orsay Cedex 91405, France

Copyright © 1986 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.


An historical overview of the various parameterised forms describing RET processes (fitting laws) is presented. The physical models behind these "laws" are compared. Particular attention is paid to the role of angular momentum constraints and to the energy dependence of the state-to-state cross-sections. Finally it is shown how general trends can be inferred from the topology of the intermolecular potential energy surface.