Infrared study of the X2Π ν = 0, 1, 2 levels of 14N16O. Preliminary results on the ν = 0, 1 levels of 14N17O, 14N18O, and 15N16O

Abstract

The analysis of high resolution Fourier spectra (2.5 × 10⁻³ cm⁻¹) led to accurate molecular constants for the vibrational levels ν = 0, 1, 2 of the X²Π state of ¹⁴N¹⁶O and of the levels ν = 0, 1 of the X²Π state of ¹⁴N¹⁷O, ¹⁴N¹⁸O, and ¹⁵N¹⁶O. A computer program has been written to directly reduce the data. It is shown that the expected variations for the different parameters with isotope substitution are well verified. Values of A_J(e) and γ_e are determined and discussed.