Accurate rest frequencies for the submillimetre-wave lines of the 15{N}-containing isotopologues of N2H+ and N2D^+

Details Accurate rest frequencies for the submillimetre-wave lines of the 15{N}-containing isotopologues of N2H+ and N2D^+ Accurate rest frequencies for the submillimetre-wave lines of the 15{N}-containing isotopologues of N2H+ and N2D^+

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...496..275d&link_type=abstract

Astronomy and Astrophysics, Volume 496, Issue 1, 2009, pp.275-279

Astronomy and Astrophysics

Astrophysics

2

Molecular Data, Methods: Laboratory, Techniques: Spectroscopic, Radio Lines: Ism

Scientific paper

The submillimetre-wave spectrum of the molecular ions N15NH^+, 15NNH^+, N15ND^+, and 15NND+ 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/N2/H2(D2) discharge plasma and the 15N-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.

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