Accession Number:

AD0779890

Title:

A Study of Equations of State/Opacity of Ionized Gases.

Descriptive Note:

Final rept. 31 Oct 72-31 Oct 73,

Corporate Author:

SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CALIF

Personal Author(s):

• Harvey,James M.
• Katz,Ira
• Vik,Robert C.

Report Date:

1973-10-01

Pagination or Media Count:

84.0

Abstract:

The report describes additions and modifications to the CAPO system of opacity codes and presents the results of other research tasks on emission, absorption and transport of radiation in high temperature materials. The accuracy of several approximate methods of opacity treatment is assessed. The radiative properties of thin plasmas, not in local thermodynamic equilibrium non-LTE are considered. Several codes written to provide ionic charge distributions, excited state populations, and emission rates in non-LTE plasmas are described. Electron positron pair production rates are studied and estimates made of the times required to establish significant pair populations under various conditions. Author

Descriptors:

• *Opacity
• *Plasmas(Physics)
• *Equations of state
• Positrons
• Electronic states
• Emission spectra
• Absorption spectra
• Computerized simulation
• Electron transitions
• Atomic energy levels
• Transmittance
• Rates
• Computer programming
• Photons
• Particle collisions
• Temperature

Subject Categories:

• Computer Programming and Software
• Atomic and Molecular Physics and Spectroscopy
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE