Abstract

The positions and strengths of more than 2000 methane absorption lines stronger than 1.0 × 10⁻⁴ cm⁻² atm⁻¹ have been measured in the 5500–6180-cm⁻¹ spectral region. The measurements were made using spectra recorded at room temperature (296 K) with a resolution of 0.01 cm⁻¹. The spectra were obtained using the Fourier transform spectrometer at the McMath solar telescope at the Kitt Peak National Observatory. The 2ν₃ band strength of ¹²CH₄ to be 1.641 cm⁻² atm⁻¹; a Herman-Wallis-type correction was also was determined determined to be (1 + 0.0298 m + 0.000536 m²).

© 1988 Optical Society of America

Empirical values of the ground state energies for methane transitions between 5500 and 6150 cm⁻¹

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