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Radial distribution function of liquid argon according to significant structure theory
1Department of Chemistry, Korea Advanced Institute of Science and Technology, P.O. Box 150, Cheongyangni, Seoul, Korea.
Summary
This study validates significant structure theory for liquids by analyzing molecular distribution. Fluidized vacancies explain inhomogeneous local structures and negligible long-range correlations in liquid argon.
Area of Science:
- Physical Chemistry
- Condensed Matter Physics
Background:
- Significant Structure Theory (SST) provides a framework for understanding liquid properties.
- The radial distribution function (RDF) is crucial for characterizing liquid structures.
Purpose of the Study:
- To test the validity of the significant structure theory of liquids.
- To evaluate the radial distribution function (RDF) within this theoretical framework.
Main Methods:
- Utilized a face-centered cubic quasi-lattice model.
- Incorporated volume fluctuations to represent molecular thermal displacements.
- Calculated the radial distribution function (RDF).
Main Results:
- Demonstrated inhomogeneous local structures in liquids.
- Observed negligible long-range correlations due to fluidized vacancies.
- Achieved good agreement between calculated and experimental results for liquid argon.
Conclusions:
- The significant structure theory, incorporating volume fluctuations and fluidized vacancies, accurately describes liquid structures.
- The model successfully predicts the behavior of liquid argon, validating the theory's applicability.
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