Corrections to Linear Mixing in Binary Ionic Mixtures and Plasma Screening at Zero Separation
✍ Scribed by A. I. Chugunov; H. E. DeWitt
- Book ID
- 102131969
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 130 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0005-8025
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✦ Synopsis
Abstract
Using the results of extensive Monte Carlo simulations we discuss corrections to the linear mixing rule in strongly coupled binary ionic mixtures. We analyze the plasma screening function at zero separation, H~jk~ (0), for two ions (of types j = 1,2 and k = 1, 2) in a strongly coupled binary mixture. The function H~jk~ (0) is estimated by two methods: (1) from the difference of Helmholtz Coulomb free energies at large and zero separations; (2) by fitting the Widom expansion of H~jk~ (x) in powers of interionic distance x to Monte Carlo data on the radial pair distribution function g~jk~ (x). These methods are shown to be in good agreement. For illustration, we analyze the plasma screening enhancement of nuclear burning rates in dense stellar matter (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)