Knowledge Bank

Absolute intensity measurements have been performed at 296 K in the $\nu 4+\nu 5$ band of $\mathrm{<mrow\; data-mjx-texclass="ORD">12</mrow>}C2H2$ in the 7.54 $\mu$m region, using a tunable diode laser spectrometer. Experimental conditions were chosen to place the 18 R-branch lines studied in both the Doppler an Voigt profile regimes. Parameters for pressure broadening with $N2$ and He were derived for several lines. Line intensities for several of the $C2H2$ "hot band" lines in this spectral region have also been measured.