Line-by-Line Calculations of Hot-Gas Spectra Including HF and HCl
Abstract
Low- and medium-resolution (2/and 2/cm) spectra are presented of hot nonuniform gas samples in the 2- to 5-micrometers spectral region based on line- by-line radiance computations. Two gas samples are considered. The first contains CO2, CO, and H2O as the active radiating species. The second contains HF and HC1 as the active species. The radiation transmitted to the top of the atmosphere from these samples is also computed. The Air Force Cambridge Research Laboratories spectral line atlas was used to obtain line parameters for gases that are atmospheric constituents. The computation from basic molecular constants of the required additional HC1 and HF line parameters for the v = 0-1, 1-2, 2-3, 3-4, and 0-2 bands, including lines of importance in hot samples, is described in detail, and the resulting line parameters are listed. These computed line parameters agree well with available observations by several investigators at both low and high temperatures. As expected, the AFCRL atlas is found, by comparison with experimental spectra, to be quite adequate for modeling samples at terrestrial temperatures, but somewhat lacking in the lines required for complete modeling of samples at high temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 04, 1975
- Accession Number
- ADA019573
Entities
People
- Charles M. Randall
Organizations
- The Aerospace Corporation