Physics – Optics
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apopt..24.2788d&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 24, Sept. 1, 1985, p. 2788-2791. NASA-supported research.
Physics
Optics
25
Fourier Transformation, Infrared Spectrometers, Methane, Molecular Spectroscopy, Spectral Line Width, Tunable Lasers, Absorption Spectra, Electron Transitions, Least Squares Method, Molecular Spectra
Scientific paper
Air-broadened and N2-broadened halfwidths at room temperature for twenty-five transitions in the nu-4 fundamental band of (C-12)H4 have been determined from IR absorption spectra recorded with a tunable diode laser spectrometer. Two tunable diode lasers operating in the 1250-1380-kayser region were used to obtain these data. Air-broadened halfwidths for twenty of these lines were also determined from additional spectra recorded at 0.01-kayser resolution with the Fourier transform spectrometer in the McMath solar telescope complex on Kitt Peak. The air-broadened halfwidths obtained from these two techniques are very consistent with agreement better than 3 percent in most cases.
Benner Chris D.
Devi Malathy V.
Rinsland Curtis P.
Smith Mary Ann H.
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