The electric dipole moment of NiH <i>X</i> 2Δ5/2 and <i>B</i> 2Δ5/2

Abstract

A sputter source/supersonic jet apparatus has been developed in order to record MJ-resolved Stark spectra of refractory diatomic molecules. Dipole moments of 0.3±0.1 and 2.4±0.1 D have been measured for the NiH B 2Δ5/2(v=1) and X 2Δ5/2(v=0) levels from resolved splittings of the Q(2.5) and R(2.5) lines at 17 462.95 and 17 500.50 cm−1.