dc.creator Predoi-Cross, Adriana en_US dc.creator Unnikrishnan, Anil V. en_US dc.creator Heung, Henry en_US dc.creator Brown, L. R. en_US dc.creator Benner, D. Chris en_US dc.creator Devi, V. Malathy en_US dc.date.accessioned 2008-01-12T13:53:45Z dc.date.available 2008-01-12T13:53:45Z dc.date.issued 2007 en_US dc.identifier 2007-MG-08 en_US dc.identifier.uri http://hdl.handle.net/1811/31407 dc.description Author Institution: University of Lethbridge, Department of Physics, 4401 University Drive, Lethbridge, Alberta, TIK3M4, Canada; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Department of Physics, The College of William and Mary, Williamsburg, VA 23187-8795 en_US dc.description.abstract \maketitle This study provides the first experimental measurements of line mixing via the off diagonal relaxation matrix element formalism in air-broadened methane spectra for any vibrational band and the first off diagonal relaxation matrix elements associated with line mixing for pure methane in the $\nu_2$+$\nu_3$ band of $^{12}$CH$_4$. A speed-dependent Voigt profile with line mixing is used with a multispectrum nonlinear least squares curve fitting technique.} \underline{\textbf{53}}, 705-721, 1995.} The off diagonal relaxation matrix element coefficients of eighteen pairs of $\nu_2$+$\nu_3$ transitions between 4410 and 4629 cm$^{-1}$ have been determined. The measured self-line mixing coefficients vary from 0.0019 to 0.0390 cm$^{-1}$atm$^{-1}$ at 296 K, and for air line mixing coefficients vary between 0.0005 and 0.0205 cm$^{-1}$atm$^{-1}$ at 296 K. The spectral data used in the analysis were recorded at a resolution of 0.01-cm$^{-1}$ using the McMath-Pierce Fourier transform spectrometer located at the National Solar Observatory on Kitt Peak, Arizona. en_US dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title LINE MIXING EFFECTS IN THE $\nu_2$+$\nu_3$ BAND OF METHANE en_US dc.type article en_US
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