The fluorescence excitation spectrum of the NH2 Ã2A1 ← X̃2B1 system in the region 2900-4300 Å has been measured under jet-cooled conditions using a pulsed discharge source. A total of fourteen bands involving the pure bending states (0, v′2, 0) were observed and analyzed, including 10 bands not previously measured to our knowledge. The spectra are largely free from rotational perturbations at the low N values accessed in this experiment, and the molecular constants were obtained from a least squares fit to the determined spin-rovibronic term values. The derived constants are in good agreement with theoretical predictions incorporating the effects of orbital angular momentum on the spin-rotational fine structure.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry