Computer Measurement of Line Strengths with Application to the Methane Spectrum
- 1 May 1983
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 37 (3) , 287-292
- https://doi.org/10.1366/0003702834634514
Abstract
Computer-aided measurement of absorption line strengths from high resolution spectra greatly improves the accuracies to which relative line strengths can be determined. This article describes a computer program written for interactive use on a Prime minicomputer to fit simultaneously absorption line positions, strengths, linewidths, and continuum parameters. Application to the methane spectrum indicates that relative line strengths have been measured with accuracies of 2% or better for single isolated absorptions. Line strengths from the Q branches of the ν4 and ν1 + ν4 bands of methane are reported and compared to calculated values given in the 1980 Air Force Geophysical Laboratory (AFGL) Compilation of Molecular Parameters.Keywords
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