Spinning of a charged dust particle in a magnetized plasma

被引：25

作者：

Krasheninnikov, S. I.

Shevchenko, V. I.

Shukla, P. K. ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 4, Fac Phys & Astron, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Ctr Plasma Sci & Astrophys, Fac Phys & Astron, D-44780 Bochum, Germany

[3] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA

[4] Umea Univ, Dept Phys, S-90187 Umea, Sweden

[5] Univ Strathclyde, SUPA Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[6] Rutherford Appleton Lab, Ctr Fundamental Phys, Didcot OX11 0QX, Oxon, England

[7] Univ Tecn Lisboa, Ctr Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

PHYSICS LETTERS A | 2007年 / 361卷 / 1-2期

关键词：

D O I：

10.1016/j.physleta.2006.08.088

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：133 / 135

页数：3

共 42 条

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