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The penetration of plasma clouds across magnetic boundaries: The role of high frequency oscillations
KTH, Superseded Departments, Alfvén Laboratory.
KTH, Superseded Departments, Alfvén Laboratory.
KTH, Superseded Departments, Alfvén Laboratory.
2004 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 11, no 7, L33-L36 p.Article in journal (Refereed) Published
Abstract [en]

Experiments are reported where a collision-free plasma cloud penetrates a magnetic barrier by self-polarization. Two closely related effects, both fundamental for the penetration mechanism, are studied quantitatively: anomalous fast magnetic field penetration (two orders of magnitude faster than classical), and anomalous fast electron transport (three orders of magnitude faster than classical and two orders of magnitude faster than Bohm diffusion). It is concluded that they are both mediated by highly nonlinear oscillations in the lower hybrid range, driven by a strong diamagnetic current loop which is set up in the plasma in the penetration process.

Place, publisher, year, edition, pages
2004. Vol. 11, no 7, L33-L36 p.
Keyword [en]
ion-beam propagation, field, transverse, instability, simulations
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23503DOI: 10.1063/1.1753575ISI: 000222094500001Scopus ID: 2-s2.0-3142724764OAI: oai:DiVA.org:kth-23503DiVA: diva2:342201
Note
QC 20100525 QC 20111101Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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