Abstract

New line parameters of the methane spectrum have been incorporated in the AFGL compilation for the 2385–3200-cm−1 region and were determined from data recorded at 0.01- and 0.02-cm−1 resolution. Observed line positions and strengths are given for approximately 8076 absorptions with strengths >3.3 × 10−24 cm/molecule (8.2 × 10−5 cm−2 atm−1). Lower state energies are given for 97% of the absorptions listed. Most of the lower states are determined through assignment of seven bands of 12CH4 (ν1, ν3, 2ν2, ν2 + ν4, 2ν4, ν3 + ν4ν4 and ν2 + ν3ν2), four bands of 13CH4 (ν3, 2ν4, ν2 + ν4 and ν3 + ν4ν4), and three bands of CH3D (ν1, ν4, and 2ν5). A few of the lower state energies are determined experimentally from the data taken at cold sample temperatures.

© 1981 Optical Society of America

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