Experimental spectral line parameters in the 1-0 band of nitric oxide

Abstract Laboratory Fourier transform absorption spectroscopy has been used to obtain new measurements of spectral line parameters in the P and R branches of the two allowed 1-0 subbands of NO. Parameters measured are the self-broadened widths and absolute strengths at room temperature and the N 2 -broadened widths over the temperature range 213–296 K. From these data a band-strength at 296 K (4.45 ∗ 10 −17 cm −1 /mol cm −2 ) and an average temperature exponent of N 2 -broadened linewidths (−0.71) have been derived. The J dependence of the temperature exponent was examined and found to be insignificant compared to experimental error.