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Spinning of a charged dust particle in a magnetized plasma
Umeå University, Faculty of Science and Technology, Department of Physics. Institut für Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany; SUPA Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom; Centre for Fundamental Physics (CfFP), Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, United Kingdom; Centro de Fisica, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal.
2007 (English)In: Physics Letters A, ISSN 0375-9601, E-ISSN 1873-2429, Vol. 361, no 1-2, 133-135 p.Article in journal (Refereed) PublishedText
Abstract [en]

We present a novel mechanism for spinning of a charged dust particle in a magnetized plasma. Specifically, we show that the dust particle spinning is caused by a torque that is produced due to interactions between the electric field E and an asymmetric dust particle electric dipole that is induced by the cross-field (viz. the E x B, where B is the external magnetic field) plasma flow. The torque acting on the dust particle is proportional to vertical bar E vertical bar(2), so that both laminar and turbulent electric fields can cause dust particle spinning. For plasma parameters typical of tokamak edges. the characteristic dust spinning frequency is of the order of several hundred kHz.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2007. Vol. 361, no 1-2, 133-135 p.
Keyword [en]
fine particles, fusion devices, ion flow, dynamics, grains, emission, crystals, rotation, physics, motion
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:umu:diva-118218DOI: 10.1016/j.physleta.2006.08.088ISI: 000244131000025OAI: oai:DiVA.org:umu-118218DiVA: diva2:917409
Available from: 2016-04-06 Created: 2016-03-14 Last updated: 2016-04-06Bibliographically approved

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Shukla, Padma Kant
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