Application of a VUV Fourier transform spectrometer and synchrotron radiation source to measurements of. VI. The ε(0,0) band of NO

Abstract

The ε(0,0) (D 2Σ+–X 2Πr) band of NO has been recorded by using a vacuum ultraviolet Fourier transform spectrometer from Imperial College, London, with synchrotron radiation at the Photon Factory, KEK, Japan, as a continuum light source. Analysis of the ε(0,0) band provides accurate rotational line positions and term values as well as the photoabsorption cross sections. Molecular constants of the v=0 level of the D 2Σ state have been determined as T0=53 291.10±0.10 cm−1, B0=1.991 07±0.000 05 cm−1, and D0=(6.6±0.1)×10−6 cm−1. Accurate rotational line strengths have also been obtained and the sum of the line strengths for all rotational lines is determined as 2.18×10−15 cm2 cm−1. The band oscillator strength of the ε(0,0) band is determined to be (2.47±0.12)×10−3.