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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 6, Number 1
February 20, 1962 

A Partition Function for Liquid Metals

액체금속의 상태화
Wan Kyuc Kim

필자는 주기표 1족에 적용되는 액체금속의 모형으로서 순수한 액체금속은 2원자분자의 단진동자로 구성되면 이 진동자는 자기가 고유하는 싸이트(site)종에 따라 두가지 에너지상태중 하나를 취하게 된다고 가상함으로써 액체상태화를 유도하였다. 이 상태화식은 본질적으로는 하나의 물질고유의 상수(θ)를 내표하고 있으며 액체금속에 대하여 이 특성치를 줌으로써 여러가지 열력학적 성질 즉 열기압, 액체의 엔트로리, 비열 등을 산출하여 실측치와 비교하여 보았다. 그 결과는 충족스러운 일치를 보여준다.

The author assumes that pure liquid metal is composed of molecular oscillators whose energy states are classified into two subgroups, i.e., A and B states, each being accesible to either one of the two sorts of lattice sites. The partition function involves constants characteristic of substance, which are obtainable from the Debye characteristic temperature assigned to its solid state. Calculation has been made for the various thermodynamic properties such as the vapor pressure, the entropy, and the heat capacity of liquid metals of Group Ⅰ elements over the temperature range from the melting points to the boiling points. The theoretical values thus obtained are in good accordances with those observed, within experimental error, although a slight derivation is observed in the atomic heat capacity.

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