Single-Particle Theory for Systems at High Densities. II. Solid Argon and Argon—Quinol Clathrate

A quantal version of the Lennard-Jones and Devonshire cell theory is used to predict the thermodynamic properties of solid argon and argon in a β-quinol matrix at low temperatures. The agreement with the experimental properties of solid argon is very good and an interpretation of the specific heat contribution due to cavity formation is discussed. The comparison with the argon—quinol clathrate data is not good. Reasons for this discrepancy are discussed and krypton— and methane—quinol clathrates are examined.