Abstract
The vacuum ultra-violet (V.U.V.) emission spectrum of N 2, produced by a low pressure discharge, is investigated at high resolution from 107.8 nm down to 85 nm. Tens of newly observed bands show up at short wavelength. Cross-examination of emission and absorption spectra reveals that most of apparent intensity anomalies in rotational structures arise from radiation trapping, by accidental coincidence of an emission line with an absorption line from another band. It is concluded that very few anomalies can be ascribed to predissociation.
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