The visible spectrum of rhodium monoxide: Rh 16O and Rh 18O

Abstract

Spectroscopic observations are reported for rhodium monoxide from hollow-cathode emission and laser-induced fluorescence experiments. Eleven bands of Rh 16O and 10 of Rh 18O, from the [15.8] 2Π– X 4Σ − (b) and [16.0] 2Π– X 4Σ − (b) transitions, have been rotationally analyzed. The ground state constants have been determined as B 0 = 0.4132, λ 0 = −0.58 and γ 0 = −0.102, in cm −1. Rotational and lambda doubling parameters in v = 0, 1, 2, and 3 excited state vibrational levels have also been determined.