Generation of two-dimensional dust vortex flows in a direct current discharge plasma

Journal Article · Fri May 15 00:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3139252· OSTI ID:21277126

Uchida, Giichiro; Iizuka, Satoru ^[1]; Kamimura, Tetsuo ^[2]; Sato, Noriyoshi ^[3]

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1. Graduate School of Engineering, Tohoku University, Sendai 980-8579 (Japan)
2. Faculty of Science and Technology, Meijo University, Nagoya 468-8502 (Japan)
3. Tohoku University, Sendai 980-8579 (Japan)

The two-dimensional dust vortex flows are observed in a direct current discharge plasma near the edge of a metal plate which is situated in the dust-particle levitation region. Applying negative dc potential to the metal plate, dust particles are strongly accelerated toward the metal plate edge, and two symmetric dust vortex flows are generated on both sides of the metal plate. Numerical calculation including the effect of the ion drag force well demonstrates the dust vortex formation as in the experiment. A mechanism of the dust vortex generation could be explained by effect of an asymmetry of ion drag force near the metal plate.

• OSTI ID: 21277126
• Journal Information: Physics of Plasmas, Vol. 16, Issue 5; Other Information: DOI: 10.1063/1.3139252; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIRECT CURRENT
DRAG
DUSTS
ELECTRIC DISCHARGES
IONS
METALS
PLASMA
PLATES
TWO-DIMENSIONAL CALCULATIONS
VORTEX FLOW