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Linear mixing rule in screened binary ionic mixturesThe validity of the linear mixing rule is examined for the following two cases (1) when the response of the electron gas is taken into account in the effective ionic interaction and (2) when finite-temperature effects are included in the dielectric response of the electrons, i.e., when the ions interact with both temperature- and density-dependent screened Coulomb potentials. It is found that the linear mixing rule remains valid when the electron response is taken into account in the interionic potential at any density, even though the departure from linearity can reach a few percent for the asymmetric mixtures in the region of weak degeneracy for the electron gas. A physical explanation of this behavior is proposed which is based on a simple additional length scale.
Document ID
19900060179
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chabrier, G.
(California Univ. Santa Barbara, CA, United States)
Ashcroft, N. W.
(California, University Santa Barbara, United States)
Date Acquired
August 14, 2013
Publication Date
August 15, 1990
Publication Information
Publication: Physical Review A
Volume: 42
ISSN: 1050-2947
Subject Category
Plasma Physics
Accession Number
90A47234
Funding Number(s)
CONTRACT_GRANT: NSF PHY-82-17853
CONTRACT_GRANT: NSF PHY-88-08146
CONTRACT_GRANT: NAGW-1476
Distribution Limits
Public
Copyright
Other

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