Thomas-Fermi model for a dust particle in a plasma
GoLP/Centro de Física de Plasmas, Instituto Superior Técnico 1049-001
2 Institute of Physics - Tbilisi 380077, Georgia
Accepted: 7 November 2001
The nonlinear Debye screening associated with the trapped ion population around a negatively charged dust particle immersed in a plasma is considered here. The analogy between the dressed dust particle in a plasma and an atomic system is explored. It is shown that, in certain limits, the system is described by a Thomas-Fermi–type of wave equation.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 31.15.Bs – Statistical model calculations (including Thomas-Fermi and Thomas-Fermi-Dirac models)
© EDP Sciences, 2002