The method developed in a recent paper 1) by the authors and 1~. B i n g e n is extended to real three dimensional lattices. The zero point energy is calculated for isotopic mixtures and pure isotopes. The results obtained for one dimensional lattices are shown to remain qualitatively valid for thre
Effets isotopiques et propriétés thermodynamiques en phase condensée. III
✍ Scribed by I. Prigogine; R. Bingen; A. Bellemans
- Publisher
- Elsevier Science
- Year
- 1954
- Weight
- 983 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0031-8914
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✦ Synopsis
Le premier terme est n6gatif car si B ale volume le plus grand, il aura aussi la compressibilit6 la plus grande; au contraire, le second terme est positif *) Le premier terme de (2.5) est ~quivalent ~ la formule (2.19) de Prigogine et Philippot 4)>. Le second terme avait 6t6 n6glig6 clans ce travail. *) Nous avons aussi calcul6 les termes d'ordre sup6rieur de/e n6glig6s dans (2.6) : ils valent environ --0,3 cal. et sont donc beaucoup plus petits que le premier terme, ce qui just.ifie nos approximations du §2.
📜 SIMILAR VOLUMES
The zero point energy of solid isotopic mixtures is discussed and their properties are compared with those of the pure isotopes. The case of a one-dimensional chain of molecules is considered in some detail because the calculations may then be performed in a rigourous way. An extension of the result