J. Phys. France
Volume 51, Numéro 24, décembre 1990
Page(s) 2791 - 2800
J. Phys. France 51, 2791-2800 (1990)
DOI: 10.1051/jphys:0199000510240279100

Symmetry properties in position and momentum space

M. Defranceschi1 et G. Berthier2

1  CEN Saclay, Bât. 462, DSM/DPhG/PAS, F-91191 Gif-sur-Yvette, France
2  Institut de Biologie Physico-chimique, 13 rue Pierre et Marie Curie, F-75005 Paris, France

Atomic and molecular symmetry properties for the wave functions and electronic densities in position and momentum spaces are compared. A systematic study of the correspondance of point groups in both spaces is made and examples of experiments of (e, 2e) spectroscopy performed on atoms or molecules are compiled. Simple guidelines for interpreting electron distribution patterns are presented which enable one to sketch the nuclear geometry from the knowledge of momentum maps and Fourier transform effects.

3360 - Photoelectron spectra.
3480 - Electron scattering.

Key words
atomic structure -- electron spectroscopy -- molecular electronic states -- quantum theory -- wave functions