Quantum theory of condensed permanent gases I the law of corresponding states
Abstract
It is shown in a quite general way, that the equation of states of the noble gases, H 2, D 2 and N 2 can be written in a reduced form, in which the thermodynamic quantities T, P, V, etc. are expressed in “molecular units”, i.e. units obtained from the characteristics parameters of the intermolecular field. In general the reduced equation of states contains a parameter A∗, containing also h and the mass of the molecules, which measures essentially the influence of quantum mechanics on the phenomenon considered. Only when classical statistics can be applied and A∗ = 0, the reduced equation of states implies the law of corresponding states in its classical form. The reduction with molecular units is applied to the condensed phase of the substances mentioned above to study experimentally the thermodynamical properties as a function of A∗ and to obtain in this way information on the influence of quantum theory on these phenomena.
- Publication:
-
Physica
- Pub Date:
- April 1948
- DOI:
- 10.1016/0031-8914(48)90032-9
- Bibcode:
- 1948Phy....14..139D