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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 56, Iss. 5 — May. 1, 1966
  • pp: 675–677

Indirect Method for Measuring Spectral Linewidth, with Application to N2O

U. P. OPPENHEIM and A. GOLDMAN  »View Author Affiliations


JOSA, Vol. 56, Issue 5, pp. 675-677 (1966)
http://dx.doi.org/10.1364/JOSA.56.000675


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Abstract

When spectral band models are applied to small-frequency intervals within a band, the parameter γ0/d may be derived for these intervals. For the case of an Elsasser band the quantity d is equal to the distance between adjacent lines. Since line positions are known for many molecular bands it is possible to derive d and hence γ0, the line width in each interval. It follows that by this method γ0 is derived from low-resolution transmittance measurements. The method is shown to be accurate within ±20% for the fundamental vibration band of CO and is then applied to the 4.5-µ band of N2O. In part of this band the value of γ0 is found to be 0.08 cm-1atm-1 at 300°K for nitrogen broadened N2O.

Citation
U. P. OPPENHEIM and A. GOLDMAN, "Indirect Method for Measuring Spectral Linewidth, with Application to N2O," J. Opt. Soc. Am. 56, 675-677 (1966)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-56-5-675

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