Abstract
Using a tunable diode-laser spectrometer, we have measured self-broadening coefficients of allene for 4 lines in the ν10 fundamental band near 11μm for three low temperatures (178.15, 208.15, and 243.65K). The collisional halfwidths are obtained by fitting the spectral lines with a Voigt and a Rautian profile. For these lines, the n parameter of the temperature dependence has been determined giving a mean value of 0.700.
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