Laser-induced fluorescence spectroscopy of CrS

Abstract

CrS molecules were produced in a supersonic free jet expansion by reacting laser ablated chromium atoms and carbon disulfide. High-resolution laser-induced fluorescence spectrum between 625 and 825 nm was recorded. Six bands have been observed, which display the rotational structure of a Ω ′=-1←Ω″=-1 transition. Isotopic displacement analysis of 52CrS and 53CrS confirms that these six bands form a vibrational progression in a single band system. Ab initio calculations yielded spectroscopic properties of the two low-lying 5Π states: X 5Π(11σ 15π 11δ 2) and B 5Π(12σ 15π 11δ 2). From the good agreement between calculated and measured spectroscopic properties, we assign the observed transition as the B 5Π -1-X 5Π -1. © 2001 Elsevier Science B.V.