Knowledge Bank

We have measured the absolute intensities as well as $H2-$, $N2-$ and He- broadened half-widths of lines in the P- and R-branches of the v5- fundamental and hot bands of $C2H2$ at temperatures between 149K and 296K employing a Fourier-Transform-Spectrometer with spectral resolution as high as $0.0016cm-1$. Our intensity values are about 10 percent larger than those in the HITRAN database. THE broadening coefficients are in good agreement with results of Bouanich etal (at 296K and 177K) and Dana etal (at room temperature). Intensity and self-broadening coefficients of hundreds of lines of $CH3Cl$ in the $670-770cm-1$ region have been measured at temperatures 296, 243 and 203 K. Comparison with the existing data banks was made upon line intensities. Measurements of lines of $C2H4$ were performed in $850-1100cm-1$ spectral region. We present a preliminary set of results.