Knowledge Bank

Using the spectral transmittance data on N-$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$ broadened and $H2$-broadened lines in the $\nu 9$-fundamental of $C2H6$ at 150, 200 and 296 K, and the spectral catalog generated recently by Atakan et $al1$, we have been able to derive simple and useful results for the half-widths of lines of planetary atmospheric relevance. In $H2$-broadening, a single value of $0.104cm-1$ $atm-1$ seems to fit most of the lines well. In $N2$-broadening, 0.14 (150/T)$\mathrm{<mrow\; data-mjx-texclass="ORD">0.75</mrow>}$ when K-0, and 0.168 (150/T)$\mathrm{<mrow\; data-mjx-texclass="ORD">0.75</mrow>}$ when $K\ne 0$, have yielded excellent comparison between theoretical and experimental transmittance data.