Exact orbital motion theory of the shielding potential around an emitting, spherical body

被引：36

作者：

Delzanno, GL

Bruno, A

Sorasio, G

Lapenta, G

机构：

[1] Politecn Torino, Dipartimento Energet, Burning Plasma Res Grp, I-10129 Turin, Italy

[2] Inst Super Tecn, GoLP Ctr Fis Plasma, P-1049001 Lisbon, Portugal

[3] ISCAT, I-12037 Saluzzo, Italy

[4] Los Alamos Natl Lab, Div Theoret, Palsma Theory Grp, Los Alamos, NM 87545 USA

来源：

PHYSICS OF PLASMAS | 2005年 / 12卷 / 06期

关键词：

D O I：

10.1063/1.1914546

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A kinetic theory for the equilibrium of an unmagnetized plasma consisting of electrons and ions surrounding a spherical body emitting electrons (due to thermionic emission, photoemission, or secondary emission) is presented. The theory is valid for positively charged bodies, neglects collisions of the plasma particles, and is formulated for profiles of the shielding potential presenting an attractive well. Particle-in-cell simulations are shown to be in good agreement with the theory. An approximated criterion is derived to determine the presence of the potential well. (C) 2005 American Institute of Physics.

引用

页码：1 / 18

页数：18

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