Knowledge Bank

The intensities of individual rotation-vibration absorption lines of nitrous oxide $(N2O)$ have been measured in the region $1210cm-1$ to $1320cm-1$ with a diode laser spectrometer. These include lines in the P and R branches of the fundamental $(10\circ 0-00\circ 0)$ band of both isotopic species $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N216O$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N218O$, lines in the hot bands $(11le0-01le0)$ and $(111f0-011f0)$ of $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N216O$, and several lines of the R branch of the $(02\circ 0-00\circ 0)$ overtone band of $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N216O$. These measurements were made at pressures 0.5 torr to 12 torr, resulting in line widths which were typically $3\times 10-3$ $cm-1$. The spectra were recorded in digitized form and least-squares fit to a Voigt line profile. The individual line intensity measurements were then combined in a least-squares fit to obtain an integrated band intensity which will also be presented along with our estimate of the uncertainties The self-broadening of most of these lines has been measured. Measurements will be made of pressure broadening by $N2$.