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Dynamic trapping: Neutralization of positive space charge in a collisionless magnetized plasma
KTH, Superseded Departments, Alfvén Laboratory.
KTH, Superseded Departments, Alfvén Laboratory. KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
KTH, Superseded Departments, Alfvén Laboratory. KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
1990 (English)In: Physical Review Letters, ISSN 00319007, Vol. 65, 859-866 p.Article in journal (Refereed) Published
Abstract [en]

It is shown by numerical simulations that in a collisionless plasma electron inertia leads to inefficient neutralization of positive space charge and allows large positive potentials (φ ≫ kTe/e) to be established and maintained on the time scale of ion motion. This is true even if the buildup of positive space charge is so slow that it corresponds to a small fraction of the random electron current of the surrounding plasma. A simple physical model clarifies the physics of the process and provides an analytical expression for the potential.

Place, publisher, year, edition, pages
1990. Vol. 65, 859-866 p.
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-92948DOI: 10.1103/PhysRevLett.65.859OAI: oai:DiVA.org:kth-92948DiVA: diva2:514330
Note
cited By (since 1996) 3 NR 20140805Available from: 2012-04-07 Created: 2012-04-07 Last updated: 2012-04-07Bibliographically approved

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