Abstract
A comprehensive list of line parameters of methane have beem compiled in the 2400 to 3200 cm−1 region. Experimental positions and line strengths greater than 3×10−5 cm−2 atm−1 using spectra of 0.01 to 0.02 cm−1 resolution. The data were recorded at Florida State University with a 4-passed grating spectrometer and at the Kitt Peak National Observatory using a Fourier Transform Spectrometer. The spectra were taken with the gas sample at room (298±2K) and cold (down to 160K) temperatures using optical densities that ranged from 0.01 to 150 M-Torr. From these data positions (of single lines not overlapped by other absorptions) were measured to ± 0.0001 cm−1 and line strengths to 5% or better. The positions and strengths of blended lines were less accurately determined. Experimental lower state energies were determined for many of the lines in the 2700 to 3200 cm−1 region using the cold data. These were used extensively to determine the quantum assignments of the observed lines.
© 1980 Optical Society of America
PDF ArticleMore Like This
L.N. Majorana, G.E. Copeland, and C.N. Harward
WP19 Spectroscopy in Support of Atmospheric Measurements (SAM) 1980
Adriana Predoi-Cross, D. Chris Benner, V. Malathy Devi, Linda R. Brown, Mary Ann H. Smith, and James R. Drummond
FWB2 Fourier Transform Spectroscopy (FTS) 1999
Robert A. Toth, Edward A. Cohen, and Linda R. Brown
FMD12 Fourier Transform Spectroscopy (FTS) 2001