Abstract

A nonlinear least-squares fitting procedure has been used to derive absolute intensities for lines in the P, R, and Q branches of the (11¹0)_II ← 00⁰0 band of ¹²C¹⁶O₂ (band center = 1932 cm⁻¹) from long-path 0.01-cm⁻¹ resolution laboratory spectra. The spectral data were recorded at room temperature and low pressure (<10 Torr) with the Fourier transform spectrometer in the McMath solar telescope complex at Kitt Peak National Observatory. The observed line intensities were analyzed to derive the vibrational band intensity and F-factor coefficients. To obtain a good fit to the data, it was necessary to include terms in the expression for the F factor, which account for Coriolis-type and Fermi-type interactions and centrifugal distortion effects.

© 1983 Optical Society of America

Absolute intensity measurements of CO₂ bands in the 2395–2680-cm⁻¹ region

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