Electron current to a probe in a magnetized, collisional plasma

Charro, Mario and Sanmartín Losada, Juan Ramón (2000). Electron current to a probe in a magnetized, collisional plasma. "Physics of Plasma", v. 7 (n. 6); pp. 2622-2629. ISSN 1070-664X.

Description

Title: Electron current to a probe in a magnetized, collisional plasma
Author/s:
  • Charro, Mario
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Physics of Plasma
Date: 2000
Volume: 7
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Collisional analysis of electron collection by a probe in a strongly magnetized, fully ionized plasma is carried out. A solution to the complete set of macroscopic equations with classical transport coefficients that is wholly consistent in the domain is determined; R and le are probe radius and electron gyroradius, respectively. If R2/le 2 is large compared with mi/3me probe large compared with ion gyroradius, ion–electron energy exchange—rather than electron heat diffusion—keeps electrons isothermal. For smaller probes at negative bias, however, electron cooling occurs in the plasma beyond the sheath, with a potential overshoot lying well away from it. The probe characteristic in the electron-retarding range may then mimic the characteristic for a two electron-temperature plasma and lead to an overestimate of electron temperature; the validity of these results for other transport models is discussed

More information

Item ID: 21648
DC Identifier: http://oa.upm.es/21648/
OAI Identifier: oai:oa.upm.es:21648
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 20 Nov 2013 09:23
Last Modified: 21 Apr 2016 12:21
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