# EXPERIMENTAL COLLISION-BROADENED LINEWIDTHS IN $METHANE^{*}$

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 Title: EXPERIMENTAL COLLISION-BROADENED LINEWIDTHS IN $METHANE^{*}$ Creators: Brault, J. W.; Fox, K.; Jennings, D. E.; Margolis, J. S.; Brown, L. R. Issue Date: 1983 Abstract: High-resolution spectra of vibration-rotation transitions in $3\nu_{3}$ of both $^{12}CH_{4}$ and $^{13}CH_{4}$ have been obtained using the Kitt Peak Fourier Transform Spectrometer and a 6 m White $cell.^{1}$ This work reports the results of measurements of self- and foreign gas-broadened linewidths in both isotopic species. The broadening gases included helium and molecular hydrogen and nitrogen. These experimental values will be compared with earlier theoretical calculations of collision-broadened $linewidths.^{2}$ Implications for atmospheric phenomena will be considered. $^{*}$This research is supported, in part, by the NASA Planetary Atmospheres Program. $^{1}$J. W. Brault, K. Fox, D. E. Jennings, and J. S. Margolis, Ap. J. 247, L101 (1981). $^{2}$G. D. T. Tejwani, P. Varanasi, and K. Fox, J. Quant. Spect. Rad. Transf. 15, 243 (1975)."" URI: http://hdl.handle.net/1811/11982 Other Identifiers: 1983-TE-11