Laser-induced Fluorescence Spectroscopy of NiS: Identification of a Low-lying Electronic State

Abstract

Laser-induced fluorescence excitation spectra of jet-cooled NiS molecules were recorded in the energy range of 12200–13550 cm−1. Four vibronic bands with rotational structure have been observed and assigned to the [12.4]3∑0−-X3∑0− transition progression. The relevant rotational constants, significant isotopic shifts, and (equilibrium) molecular parameters have been determined. In addition, the lifetimes of the observed bands have also been measured.