Spinning of a charged dust particle in a magnetized plasma
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
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.
fine particles, fusion devices, ion flow, dynamics, grains, emission, crystals, rotation, physics, motion
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:umu:diva-118218DOI: 10.1016/j.physleta.2006.08.088ISI: 000244131000025OAI: oai:DiVA.org:umu-118218DiVA: diva2:917409