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# Accession Number:

## ADA243271

# Title:

## On the Mean Spherical Approximation for Hard Ions and Dipoles

# Descriptive Note:

## Summary rept.,

# Corporate Author:

## PUERTO RICO UNIV RIO PIEDRAS DEPT OF PHYSICS

# Report Date:

## 1991-11-09

# Pagination or Media Count:

##
18.0

# Abstract:

## The analytical solution of the Mean Spherical Approximation for the case of equal size ions and different size solvent is reexamined using only two parameters a polarization parameter lambda and a screening parameter Gamma. We show that the ion dipole cross energy parameter, which in previous work was obtained solving a cubic equation, can be obtained from a linear algebraic equation. Therefore, the inverse problem of calculating the reduced charge parameter d sub 0 and the reduced dipole parameter d sub 2 from lambda and Gamma is reduced to a system of two equations a cubic for d sub 0, and a linear for d sub 2. Simpler expressions for the thermodynamic parameters are also obtained.

# Distribution Statement:

## APPROVED FOR PUBLIC RELEASE

#