Affordable Access

Significant structure theory applied to liquid He.

Authors
Type
Published Article
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publication Date
Volume
77
Issue
1
Pages
18–22
Identifiers
PMID: 16592747
Source
Medline
License
Unknown

Abstract

The large kinetic zero-point motion of (4)He molecules has been properly taken into account in the significant structure theory of liquids in order to describe the liquidity of liquid (4)He. The Debye and the Bose-Einstein partition functions are used for the solid-like molecules of the normal fluid component and for the whole gas-like molecules, respectively. The solid-like molecules of the superfluid component are considered as ground state molecules without having positional degeneracies. The Bragg-Williams approximation of an order/disorder phase transition has been applied to the lambda transition of liquid (4)He. Thermodynamic and surface properties of liquid (4)He have been calculated up to the critical point. The results are satisfactory when compared with the observed values.

Statistics

Seen <100 times