Nitrogen-broadening in the nitric oxide first overtone band

Abstract Measured room temperature nitrogen-broadening coefficients are given for about 60 Λ-doublets belonging to the allowed sub-bands of the first overtone of nitric oxide, between 3620 and 3790 cm−1. Whereas a slight differential broadening (3.2% on the average) is observed between the two sub-bands, no significant vibrational dependence appears when one compares these values with those available for the fundamental band. Combining the N2-broadening coefficients with the O2-broadening coefficients recently published, the air-broadening required for atmospheric applications appears to be lower than the N2-broadening by 2%.

[1]  Lawrence P. Giver,et al.  Temperature Dependence of Nitrogen Broadening of the NO Fundamental Vibrational Band , 1997 .

[2]  A. G. Maki,et al.  Pressure broadening, lineshapes, and intensity measurements in the 2←0 band of NO , 1985 .

[3]  A. Barbe,et al.  Lambda-Splittings and Line Intensities in the First Overtone of Nitric Oxide , 1997, Journal of molecular spectroscopy.

[4]  K. Rao,et al.  Molecular Spectroscopy: Modern Research , 1972 .

[5]  J.-Y. Mandin,et al.  OXYGEN-BROADENING COEFFICIENTS OF FIRST OVERTONE NITRIC OXIDE LINES , 1999 .

[6]  Jeanine Bonamy,et al.  Air broadened NO linewidths in a temperature range of atmospheric interest , 1983 .

[7]  Lawrence P. Giver,et al.  The nitric oxide fundamental band : frequency and shape parameters for rovibrational lines , 1994 .

[8]  A. Pine.  Photoacoustic measurement of differential broadening of the Λ doublets in NO(X 2Π1/2,v=2–0) by Ar , 1989 .

[9]  Alain Barbe,et al.  REIMS HIGH RESOLUTION FOURIER TRANSFORM SPECTROMETER. DATA REDUCTION FOR OZONE , 1995 .

[10]  V. M. Devi,et al.  THE HITRAN MOLECULAR DATABASE: EDITIONS OF 1991 AND 1992 , 1992 .

[11]  J.-Y. Mandin,et al.  Λ-Splittings and Line Intensities in the 3 ← 1 Hot Band of14N16O: The Spectrum of Nitric Oxide in the First Overtone Region , 1998 .

[12]  B. Sumpf,et al.  Application of a cw tunable infrared spectrometer based on difference-frequency generation in AgGaS 2 for self-broadening investigations of NO at 5 µm , 1996 .

[13]  W. B. Johnston,et al.  Experimental spectral line parameters in the 1-0 band of nitric oxide , 1988 .

[14]  Laurence S. Rothman,et al.  Intensities and collision-broadening parameters from infrared spectra: an update. , 1992 .

[15]  G. Blanquet,et al.  Pressure broadening of CO and OCS spectral lines , 1988 .

[16]  A. Weber,et al.  Spectroscopy of the Earth's Atmosphere and Interstellar Medium , 1992 .

[17]  J.-Y. Mandin,et al.  Broadening parameters of NO2 lines in the 3.4 μm spectral region , 1997 .