CO LMR spectrum of 14 N 16 O and its analysis with spectra of 14 N 17 O and 14 N 18 O

LMR spectra for v=1←0 transitions of 14 N 16 O in X 2 II 1/2, 3/2 states were observed at 5.6 μm and 5.4 μm of CO laser. Introducing the advanced isotopic molecular constant scaling function to Hund’s case (a) diatomic structure model, these spectra were analyzed and fitted together with all reliable previous spectral data of 14 N 16 O as well as 14 N 17 O and 14 N 18 O. A full set of precise molecular parameters and their vibrational dependencies have been determined with much higher precision (1–2 orders for most parameters). Many of them have been obtained for the first time. Using isotopic scaling function, the molecular constants of 14 N 17 O and 14 N 18 O were deduced.