Submillimeter spectrum of low-temperature hydrogen - The pure translational band of H2 and the R(0) line of HD

Details Submillimeter spectrum of low-temperature hydrogen - The pure translational band of H2 and the R(0) line of HD Submillimeter spectrum of low-temperature hydrogen - The pure translational band of H2 and the R(0) line of HD

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...392l..43w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 392, no. 1, June 10, 1992, p. L43-L46. Research supported by NSER

Astronomy and Astrophysics

Astrophysics

7

Absorption Spectra, Dipole Moments, Hydrogen, Low Temperature Environments, Molecular Spectra, Solar System, Deuterium Compounds, Gas Giant Planets, Planetary Atmospheres, Rotational Spectra, Submillimeter Waves

Scientific paper

The pure translational absorption spectrum of hydrogen gas has been measured from 20 to 100/cm at temperatures in the range 24-37 K. Superposed on the broad translational band is the sharp rotational line R(0) of HD, present in the gas in natural abundance. From the intensity of the line, the electric dipole moment is determined to be (0.81 +/- 0.05) x 0.001 debye. The measurements are of relevance to the IR opacity and to the D/H ratio of the atmospheres of the giant planets.

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