Nitrogen-broadened linewidths and strengths of nitric oxide utilizing tunable diode laser spectroscopy

Nitrogen-broadened linewidths and line strengths of NO fundamental band lines were measured utilizing tunable diode laser spectroscopy. The spectral lines measured were the P(4.5), P(5.5), and P(6.5) line of the 1/2 subband. Spectra were taken on a 1.75% NO/N₂ mixture in the temperature range of 300 to 900 K and for pressures of 200, 400, and 600 Torr. The line strengths obtained in this work were found to be lower than those determined by an earlier work, and linewidths were close to those of previously published nitrogen-broadened half-widths for NO.