Statistics – Computation
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..899b&link_type=abstract
Astrophysical Journal, Part 1, vol. 258, July 15, 1982, p. 899-903.
Statistics
Computation
30
Far Infrared Radiation, Hydroxyl Radicals, Infrared Spectra, Interstellar Chemistry, Line Spectra, Molecular Spectra, Energy Spectra, Interstellar Matter, Magnetic Resonance, Nebulae
Scientific paper
It is thought likely that the study of spectral lines in the far-infrared might provide at least as much information about the physics and chemistry of the interstellar environment as radioastronomy. However, by comparison with the microwave region, the far-infrared is largely unexplored. There is a pressing need for good laboratory data to aid searches and assignments of spectra from the interstellar clouds and nebulae. Brown et al. (1981) have conducted a study of the laser magnetic resonance (LMR) spectrum of the OH radical in its ground state at far-infrared wavelengths. The present investigation is concerned with the computation of the frequencies of individual hyperfine transitions involving all rotational levels up to J = 4 1/2. The results of the calculation are presented in a table. The results are summarized in a diagram which shows the low-lying energy levels of OH. The frequencies of transitions between levels studied directly in the LMR spectrum are quite reliable.
Brown Jonathan M.
Evenson Kenneth M.
Radford Harrison E.
Schubert J. E.
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