NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Air- and N2-Broadening Coefficients and Pressure-Shift Coefficients in the C-12(O2-16) Laser BandsIn this paper we report the pressure broadening and the pressure-induced line shift coefficients for 46 individual rovibrational lines in both the (12)C(16)O2, 00(sup 0)1-(10(sup 0)0-02(sup 0)0)I, and 00(sup 0)1-(10(sup 0)0-02(sup 0)0)II, laser bands (laser band I centered at 960.959/cm and laser band II centered at 1063.735/cm) determined from spectra recorded with the McMath-Pierce Fourier transform spectrometer. The results were obtained from analysis of 10 long-path laboratory absorption spectra recorded at room temperature using a multispectrum nonlinear least-squares technique. Pressure effects caused by both air and nitrogen have been investigated. The air-broadening coefficients determined in this study agree well with the values in the 1996 HITRAN database; ratios and standard deviations of the ratios of the present air-broadening measurements to the 1996 HITRAN values for the two laser bands are: 1.005(15) for laser band I and 1.005(14) for laser band II. Broadening by nitrogen is 3 to 4% larger than that of air. The pressure-induced line shift coefficients are found to be transition dependent and different for the P- and R-branch lines with same J" value. No noticeable differences in the shift coefficients caused by air and nitrogen were found. The results obtained are compared with available values previously reported in the literature.
Document ID
19990017741
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Devi, V. Malathy
(College of William and Mary Williamsburg, VA United States)
Benner, D. Chris
(College of William and Mary Williamsburg, VA United States)
Smith, Mary Ann H.
(NASA Langley Research Center Hampton, VA United States)
Rinsland, Curtis P.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Publication Information
Publication: Journal of Quantitative Spectroscopy and Radiative Transfer
Publisher: Pergamon
Volume: 59
Issue: 3-5
ISSN: 0022-4073
Subject Category
Lasers And Masers
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available