EXPERIMENTAL DETERMINATION OF THE DIPOLE MOMENTS OF THE DEGENERATE STATES OF NH

Abstract

Light from the high-field region of a Lo Surdo discharge in ammonia was focused on the slit of a stigmatic spectrograph. Spectrograms of the 3 360 and 3 240 Å bands of NH and the hydrogen line Hβ were taken simultaneously. From observations of the molecular and atomic hydrogen Stark splittings and intensities the electric dipole moments of the degenerate states of NH were determined to be μ(A3Π) = (1.31 ± 0.03), μ(c1Π) = (1.70 ± 0.07), μ (a1Δ) = 1.49 ± 0.06) Debye, where the signs of μ(c1Π.) and μ(a1Δ) are the same.