摘要

The submillimetre-wave spectrum of the molecular ions (NNH )-N-15, (NNH )-N-15, (NND )-N-15, and (NND )-N-15 have been investigated in the laboratory using a source-modulation microwave spectrometer equipped with a negative glow discharge cell. The diazenylium ion was produced in a Ar/N-2/H-2(D-2) discharge plasma and the N-15-containing isotopologues were observed in natural abundance. Six new rotational transitions for the protonated species and seven for the deuterated ones were accurately measured in the frequency range 270-760 GHz. These new laboratory measurements of the rare isotopologues of N2H provide very precise rest frequencies at millimetre and submillimetre wavelengths useful for the radioastronomical identification of their rotational lines in the ISM.

  • 出版日期2009-3