Published 1964
| Published
Journal Article
Open
Approximate Theoretical Calculation of Continuum Opacities
- Creators
- Penner, S. S.
- Thomas, M.
Abstract
An approxhnate procedure is described for the theoretical calculation of the spectral absorption coefficient produced by bound-free and free-free transitions in plasmas containing polyelectronic atoms and ions. Our method of calculation is based on the assumption that only two ionized species make important contributions to the opacity and that these two ionic constituents are present in equal concentrations. The approximate formulas are shown to yield results that are in good accord with estimates based on detailed numerical computations for nitrogen.
Additional Information
© 1964, American Institute of Aeronautics and Astronautics. Presented as Preprint 64-58 at the AIAA Aerospace Sciences Meeting, New York, January 20-22, 1964. This work was supported by the Office of Naval Research under Contract Nonr- 220( 45), NR 015 401. A preliminary account of the studies described in this paper was given at the Mollier Colloquium of the Verband Deutscher Ingenieure at Konstantz, West Germany, on October 25,1963. This work was supported by the Office of Naval Research under Contract Nonr-220( 45), NR 015 401. A preliminary account of the studies described in this paper was given at the Mollier Colloquium of the Verband Deutscher Ingenieure at Konstantz, West Germany, on October 25,1963. The authors wish to thank B. H. Armstrong for furnishing a precise categorization of the assumptions used in his calculations. As was indicated previously in this discussion, we have avoided the complications associated with the statistical weight factors in terms not containing A' by setting gegm+d gm arbitrarily equal to unity.Attached Files
Published - 160_Penner_SS_1964.pdf
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Additional details
- Eprint ID
- 21596
- Resolver ID
- CaltechAUTHORS:20110105-092119084
- Nonr-220( 45), NR 015 401
- Office of Naval Research
- Created
-
2011-01-12Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Guggenheim Jet Propulsion Center
- Other Numbering System Name
- AIAA Aerospace Sciences Meeting Preprint
- Other Numbering System Identifier
- 64-58