ANALYSE DE LA BANDE 1–0 DU SYSTÈME 3Πi–3Σ− DE PH

Abstract

The (1,0) band of the 3IIi-3Σ− system of PH has been photographed in absorption under high dispersion. Values for the rotational constants, the spin-coupling constant, and the vibrational interval [Formula: see text] of the 3Πi state have been obtained. A study of the A-doubling shows the existence of a perturbation in the 3Π0 state; it is not possible, however, to determine unambiguously the nature of the perturbing state.