Abstract

The Los Alamos Fourier transform spectrometer has been used to study the following four near-ultraviolet transitions of nitrogen molecules in a helium inductively-coupled plasma torch:${\text{N}}_2^{+}{\text{1NG: B}}^2{\Sigma }_{\text{u}}^{+}-{\text{X}}^2{\Sigma }_{\text{g}}^{+}(0-0)$and N₂2PG: C³Π_u- B³Πg (0-2, 0-1, 0-0). Molecular constants for the ${\text{N}}_2^{+}$band have been determined using combination differences and polynomial fits, and will be compared with published values. These data demonstrate the usefulness of this instrument for molecular spectroscopy.

© 1989 Optical Society of America