Millimeter-wave spectrum of Ne-CO: new measurements

The b-type rotational transitions of the van der Waals complex, Ne-CO have been measured using the intracavity OROTRON jet spectrometer in the frequency range of 80-115 GHz. The high sensitivity of this technique enabled us to detect all three Ne isotopic modifications of the complex, 20Ne-CO, 22Ne-CO, and 21Ne-CO in natural abundance. The observed and assigned transitions belong to the Q-branch of the K = 1-0 subband and include also R (0) and P (2) lines. The newly obtained data were analysed together with previously observed millimeter-wave b-type and microwave a-type rotational transitions.