Intensity and transmission measurements in the nu-3 fundamental of N2O at low temperatures

Computer Science

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Infrared Radiation, Light Transmission, Low Temperature, Nitrous Oxides, Spectral Bands, Gas Spectroscopy, Line Spectra

Scientific paper

Spectral transmission of IR radiation through the nitrogen-broadened lines of the nu-3 fundamental of N2O has been measured at 154, 202 and 300 K. A value of 1411 + or - 54 per sq cm per atmosphere at STP has been obtained for the combined strength of the nu-3 and nu-2(1) + nu-3 - nu-2(1) bands, using the Wilson-Wells-Penner-Weber method. This value of the combined strength, the relative intensity calculations of Gray Young, the room-temperature data of Toth for nitrogen-broadened half-widths in the nu-1 + nu-3 and 2nu2(0) + nu-3 bands, and the variation of the line width with temperature proposed by Varanasi and Sarangi are shown to yield excellent agreement between the measured and computed spectral transmittance throughout the band.

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