Article révisé par les pairs
| Résumé : | The grand partition function of a finite system of interacting molecules is expressed in the form of a cluster expansion in such a way that all surface contributions are retained. A new type of cluster integrals is introduced which contain all surface contributions (superficial cluster integrals). It is then possible to separate the grand partition function into a volumic term related to the so-called irreducible cluster integrals. From this last term expressions for the surface tension and the specific adsorption are derived in the form of power series into the number density of the homogeneous part of the system. The change of the surface tension of a solvent in the presence of a solute is also studied. © 1957. |
