Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...291l..19f&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 291, April 1, 1985, p. L19-L22.
Astronomy and Astrophysics
Astrophysics
12
Hydroxyl Radicals, Laser Spectroscopy, Molecular Rotation, Molecular Spectroscopy, Far Infrared Radiation, Infrared Lasers, Interstellar Matter, Magnetic Resonance, Molecular Energy Levels
Scientific paper
The direct (zero-field) spectra of the fundamental rotational transitions of the OH radical in its Omega = 3/2 and 1/2 states at 2509.9 and 1834.7 GHz are obtained using a recently developed far-infrared laser sideband spectrometer. These measurements have verified and refined the predictions of previous laser magnetic resonance work, thereby confirming the far-infrared detection of interstellar OH. The increased accuracy of these direct measurements will be useful to future astronomical and atmospheric studies of these important transitions.
Blake Geoffrey A.
Farhoomand Jam
Pickett Herbert M.
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