Molecule Spectra

Abstract

In a first approximation, a molecule may be considered as a system of f electrons moving around nuclei fixed in space. We shall restrict ourselves to molecules consisting of two atoms, and we shall neglect the spin. We may assume the nuclei to be situated on the Z-axis in distances β′r and β″r from their common centre of gravity, where r is the distance between the nuclei and

$$ \beta ' = \frac{{M''}}{{M' + M''}},\,\beta '' = \frac{{M'}}{{M' + M''}}, $$

M′ and M″ being the masses of the nuclei.