Laboratory Measurements of the Hyperfine Structure of H14N12C and D14N12C

Details Laboratory Measurements of the Hyperfine Structure of H14N12C and D14N12C Laboratory Measurements of the Hyperfine Structure of H14N12C and D14N12C

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...649l..53b&link_type=abstract

The Astrophysical Journal, Volume 649, Issue 1, pp. L53-L56.

Astronomy and Astrophysics

Astronomy

10

Astrochemistry, Ism: Molecules, Methods: Laboratory, Molecular Data, Radio Lines: Ism

Scientific paper

The nuclear quadrupole hyperfine structure of H14N12C and D14N12C has been resolved in the laboratory for the first time using millimeter-wave absorption spectroscopy. The transient species were produced in a pulsed DC discharge nozzle, and Doppler broadening effects were minimized by propagating the millimeter waves coaxially with the supersonic molecular beam. New rest frequencies for the J=1-0, J=2-1, and J=3-2 rotational transitions of the ground vibrational state were determined. The nuclear quadrupole coupling constants derived from the spectra are (eQq)N=264.5+/-4.6 kHz for H14N12C and (eQq)N=294.7+/-13.1 kHz and (eQq)D=261.9+/-14.5 kHz for D14N12C.

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