FTS-Raman flame spectroscopy of high-J lines in H2 and D2

Details FTS-Raman flame spectroscopy of high-J lines in H2 and D2 FTS-Raman flame spectroscopy of high-J lines in H2 and D2

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jmosp.126...19j&link_type=abstract

Journal of Molecular Spectroscopy, Volume 126, Issue 1, p. 19-28.

Computer Science

20

Scientific paper

High-J rotational transitions in the ground vibrational state of molecular hydrogen and deuterium have been recorded using the FTS-Raman technique. Transitions above those recorded previously at room temperature were observed in diffusion flames burning H2 with air, and D2 with air. For H2 the v = 0-0 S(6) and S(7) transitions, which had not been observed previously, were recorded in the flame spectra. For D2 the flame spectra yielded measurements of the S(7) through S(12) lines for the first time. By combining flame and room-temperature Raman and infrared measurements it has been possible to improve H2 ground state rotation constants to fifth order. For D2, the combination of flame and room-temperature Raman measurements required an extension to fifth-order constants, as compared with the third-order fit which was adequate for the room-temperature data alone. Our improved line positions can be applied to transitions observed in the Orion Molecular Cloud.

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