Knowledge Bank

Intensities, half-widths and shapes of rotational lines in the $\nu 3$ fundamental of methane have been measured at several temperatures between $150\circ K$ and $295\circ K$ . Data on half-widths in self-broadening and in broadening by $H2$, $N2$ and He, are compared with the theoretical results of Tejwani. Temperature dependence of line and band intensities, and of half-widths in all of the cases of broadening, is discussed.