Accession Number:

AD0261520

Title:

APPROXIMATE CONTINUOUS OPACITY CALCULATIONS FOR POLYELECTRONIC ATOMS AT HIGH TEMPERATURES,

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS/CONVAIR SAN DIEGO CALIF

Personal Author(s):

Report Date:

1961-06-30

Pagination or Media Count:

19.0

Abstract:

Approximate formulas derived by Raizer JETP USSR 371079, 1959 and modifications thereof for the Rosseland and Planck mean absorption coefficients in high-temperature gases have been compared with Armstrongs results Lockheed Missiles and Space Div., Palo Alto, Rept. LMSD-4979, July 15, 1959 for nitrogen at 5 and 20 ev for densities varying between 5 x 10 to the 20th power cm to the -3 power and 5 x 10 to the 15th power cm to the -3 power and 15 x 10 to the 15th power cc. Comparison has also been made with results obtained by Bernstein and Dyson General Atomic Div. of General Dynamics Corp., San Diego, Report GA 848, July 13, 1959 for the Rosseland mean of fluorine at 10 ev in the density range between 10 to the 21st power cm to the -3 power and 10 to the 18th power cm to the -3 power. The modified Raizer formulas are the consistently better approximation formulas and give agreement to about a factor of two with the numerical results over the parameter range quoted above. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE