Experimental study of the pure rotational S1 line of the H2-He spectrum induced by an absorption defect collision due to collisional interference effects

Details Experimental study of the pure rotational S1 line of the H2-He spectrum induced by an absorption defect collision due to collisional interference effects Experimental study of the pure rotational S1 line of the H2-He spectrum induced by an absorption defect collision due to collisional interference effects

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983crasm.296..325b&link_type=abstract

Academie des Sciences (Paris), Comptes Rendus, Serie II Mecanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Terre

Physics

Absorptivity, Atomic Collisions, Atomic Spectra, Helium Hydrogen Atmospheres, Jupiter Atmosphere, Molecular Collisions, Molecular Spectra, Far Infrared Radiation, Fourier Transformation, Infrared Spectrometers, Interferometry, Molecular Rotation, Voyager 1 Spacecraft

Scientific paper

The results of a study of the H2-He spectrum in the far-IR at 200-700 kaysers are presented, with attention given to the absorption defect resulting from interferences between successive collisions as an explanation of data gathered by the Voyager spacecraft. The absorption coefficients were calculated for a H2 gas mixture. The experimental data were taken with a spectro-interferometer equipped with a Fourier transform program. The gas examined was 15.6 percent H2, and absorption coefficients were obtained at ambient temperatures. It is noted that the Jovian atmosphere is 10 percent He-90 percent H2, almost the opposite of the mixture used in the tests. The results indicate that the spectra detected by the Voyager instruments scanning the Jovian atmosphere might be better characterized by examining pure H2 gas.

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