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The Long‐Wavelength Limit of the Structure Factor of Liquid Alkali Metals Using a One‐Component Plasma System
Author(s) -
Derouiche A.,
Bretonnet J. L.
Publication year - 1990
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221570103
Subject(s) - alkali metal , component (thermodynamics) , plasma , long wavelength limit , limit (mathematics) , wavelength , phase (matter) , random phase approximation , structure factor , upper and lower bounds , atomic physics , physics , chemistry , materials science , thermodynamics , condensed matter physics , mathematical analysis , quantum mechanics , mathematics
The one‐component plasma (OCP) is used as reference system to calculate the long‐wavelength limit S (0) of the structure factor of liquid alkali metals within the random phase approximation (RPA). It is found that the OCP system is suitable to describe S (0) when the plasma parameter corresponds to the minimum variational upper bound to the free energy.