Theory of the interface between a classical plasma and a hard wall |
| |
Authors: | P Ballone G Pastore MP Tosi |
| |
Institution: | International School for Advanced Studies, Trieste, Italy;Istituto di Fisica Teorica dell''Università and International Centre for Theoretical Physics, Trieste, Italy |
| |
Abstract: | The interfacial density profile of a classical one-component plasma confined by a hard wall is studied in planar and spherical geometries. The approach adapts to interfacial problems a modified hypernetted-chain approximation developed by Lado and by Rosenfeld and Ashcroft for the bulk structure of simple liquids. The specific new aim is to embody self-consistently into the theory a “contact theorem”, fixing the plasma density at the wall through an equilibrium condition which involves the electrical potential drop across the interface and the bulk pressure. The theory is brought into fully quantitative contact with computer simulation data for a plasma confined in a spherical cavity of large but finite radius. It is also shown that the interfacial potential at the point of zero charge is accurately reproduced by suitably combining the contact theorem with relevant bulk properties in a simple, approximate representation of the interfacial charge density profile. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|