# Evaluation of angular integrals by harmonic projection

Research paper by J. Avery, F. Antonsen

Indexed on: 01 Mar '93Published on: 01 Mar '93Published in: Theoretica chimica acta

#### Abstract

Angular momentum and angular integrations are discussed from the standpoint of the theory of harmonic polynomials. General formulae are developed which provide alternatives to the usual group theoretical approach. These formulae are illustrated by applications to the calculation of molecular electrostatic potentials, Fourier transforms of charge densities, and multipole expansions.