Detection of the infrared fundamental band of HeH/+/

Details Detection of the infrared fundamental band of HeH/+/ Detection of the infrared fundamental band of HeH/+/

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..48...20b&link_type=abstract

Physical Review Letters, vol. 48, Jan. 4, 1982, p. 20-22.

Astronomy and Astrophysics

Astrophysics

51

Astrophysics, Helium Ions, Hydrogen Ions, Infrared Spectra, Laser Spectroscopy, Molecular Spectra, Line Spectra, Molecular Rotation, Tunable Lasers, Vibrational Spectra, Infrared Spectra, Other Exotic Atoms And Molecules, Macromolecules, Clusters

Scientific paper

The detection of nine lines of the fundamental band of HeH(+), a compound of astrophysical significance which may be detectable in dense clouds or planetary nebulae, is reported. Absorption of infrared radiation generated by a tunable dye laser was monitored in a multiple-reflection discharge cell with a 100:1 mixture of He to H2. The lines detected include those from P(4)(J = 3-4) to R(4)(J = 5-4) of the v = 1-0 band. Molecular constants are derived for the v = 0 and v = 1 levels of the X 1 Sigma + state which are in agreement with the calculations of Bishop and Cheung (1979).

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