Abstract

Self-broadened linewidths and pressure-induced frequency shifts of N2O were measured from spectra obtained at high spectral resolution in the 1800–2630 cm−1 region. From measurements of 136 lines, the average pressure-shift coefficient was found to be −0.0015 ± 0.0006 cm−1/atm. The shift coefficients were found to have a weak J dependence, in which the magnitude of the coefficients increases with increasing values of J. Line-strength measurements were derived from spectra obtained at low sample pressures, and these data were analyzed to determine vibrational band strengths, rotationless dipole-moment matrix elements, and F factor coefficients for several bands in the 900–3600 cm−1 region. Measurements of over 15,000 selected vibration–rotation transitions, including eight N2O isotopic species, were used in the various analyses.

© 1993 Optical Society of America

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