Phased and Boltzmann-weighted rotational averages

David L. Andrews and Michael J. Harlow
Phys. Rev. A 29, 2796 – Published 1 May 1984
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Abstract

This paper deals with two types of rotational average which arise in a number of physical processes in fluids. The first are termed "phased averages," and occur in the theory of bimolecular interactions with radiation; the second are "Boltzmann-weighted" averages, which occur in the theory of anisotropic media. A general method for obtaining these results is presented, and analytic results are given for tensorial interactions up to and including the fourth rank. Several applications are discussed including laser-induced forces, cooperative two-photon absorption, and electric-field-induced harmonic generation. The proof of a relation involving conventional rotational averages is also given.

  • Received 26 September 1983

DOI:https://doi.org/10.1103/PhysRevA.29.2796

©1984 American Physical Society

Authors & Affiliations

David L. Andrews and Michael J. Harlow

  • School of Chemical Sciences, University of East Anglia, Norwich NR4 7TJ, England

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Issue

Vol. 29, Iss. 5 — May 1984

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