# Accession Number:

## ADA243359

# Title:

## Equation of State and Conductivity of Hot, Dense Matter

# Descriptive Note:

## Final rept. 15 Apr 1989-31 Dec 1990,

# Corporate Author:

## BOSTON COLL CHESTNUT HILL MA

# Personal Author(s):

# Report Date:

## 1990-12-31

# Pagination or Media Count:

## 6.0

# Abstract:

The purpose of the research program reported there was to develop and apply a novel method to the calculation of the Equation of State EOS, Mean Charge State MCS or degree of ionization and conductivity of dense plasmas of moderately high Z-numbers Z 30. The method to be applied was the Thomas- Fermi model, modified and adapted to the dense plasma environment. The innovative elements of the approach are 1 The plasma environment is represented by the ion-ion and ion-electron correlation functions as source densities in the TF equation. 2 The bound electron density is posited to be zero at the ion boundary this gives a reasonably defined ion radius, separates free and bound electrons and eliminates both the unphysical extra pressure due to bound electrons characteristic to the so-called Confined Alom model and the infinite ion radius characteristic to the TF-Debye model. 3 The MCS is determined by minimizing the free energy F of the combined TF-ionplasma system, with the proper inclusion of all electron-electron, electron-ion, ion- ion correlations. 4 The method can be combined with the approach of Davis and Blaha, who solved the exact Schrodinger equation for the valence electron in the TF-potential of the core electrons.

# Descriptors:

- *IONS
- DENSITY
- ENVIRONMENTS
- CORES
- MODELS
- CONDUCTIVITY
- PLASMAS(PHYSICS)
- ELECTRON DENSITY
- FREE ELECTRONS
- BOUNDARIES
- ELECTRONS
- CORRELATION
- HIGH DENSITY
- IONIZATION
- VALENCE
- MEAN
- EQUATIONS
- FREE ENERGY
- SCHRODINGER EQUATION
- RADIUS(MEASURE)
- FUNCTIONS(MATHEMATICS)
- EQUATIONS OF STATE
- ION ION INTERACTIONS
- DENSE GASES
- SOURCES

# Subject Categories:

- Plasma Physics and Magnetohydrodynamics