Line strengths (900–3600 cm^−1), self-broadened linewidths, and frequency shifts (1800–2360 cm^−1) of N_2O

Self-broadened linewidths and pressure-induced frequency shifts of N(2)O 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 N(2)O isotopic species, were used in the various analyses.