Vol. 37, issue 07, article # 2

Abstract:

Accurate measurements of the concentration of nitrous oxide, a potent greenhouse gas, in the Earth's atmosphere are important for modeling the radiation balance of our planet. The work presents the measured broadening and shift coefficients of N₂O lines by air pressure at room temperature for 82 rovibrational transitions in the (00⁰2) ← (00⁰0) band; the rotational quantum number m varies from 3 to 54. The measurements were carried out on an IFS-125M Fourier transform spectrometer with a spectral resolution of 0.0056 cm^-1. The calculated line-broadening and shift coefficients were obtained using a semi-classical method modified by introducing a correction factor in the calculation scheme. Our parameters are compared with those presented in the literature and in modern spectroscopic databases. A vibrational dependence of the line half-widths for the n₃ stretching vibration was revealed.

Keywords:

line profile parameter, line broadening, halfwidth, line shift, nitrous oxide

Figures:

References:

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