Penner, S. S. and Thomas, M. (1964) Approximate Theoretical Calculation of Continuum Opacities. AIAA Journal, 2 (9). pp. 1572-1575. ISSN 0001-1452 http://resolver.caltech.edu/CaltechAUTHORS:20110105-092119084
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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.|
|Group:||Guggenheim Jet Propulsion Center|
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|Official Citation:||Approximate theoretical calculation of continuum opacities PENNER, S. S., CALIFORNIA INST. OF TECH., DANIEL AND FLORENCE GUGGENHEIM JET PROPULSION CENTER, KARMAN LAB. OF FLUID MECHANICS AND JET PROPULSION, PASADENA, CALIF.; THOMAS, M., AIAA Journal 1964 0001-1452 vol.2 no.9 (1572-1575) doi: 10.2514/3.2623|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||12 Jan 2011 20:00|
|Last Modified:||26 Dec 2012 12:49|
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