Kirkwoods Justification of the Cell Model

To the restoring coefficient which appears in (7.4.2) corresponds a frequency 

Let us now briefly consider the thermodjmamic properties which correspond to this model. The cell partition function (7.1.1) takes the simple form 

The constant factor t v y) may be absorbed in the kinetic part of the partition functions. From this relation for the cell partition function all relevant thermodynamic properties may easily be deduced. The two models we have considered in 3 and 4 are dearly ovnsimplifled. Their intor t is that they retain the most important features of the Lennard-Jones and Devonshire cell model of condensed states with an appreciable gain in simplidty. 

In the next paragraphs of this chapter we diall bri y discuss the justification of the cell model and some recrat extensions. 

Wediall begin with a deeper justffication of the basic fmrnnla (7.1.2) due to Kirkwood [1950]. 

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