Superfluidlike motion of an absorbing body in a collisional plasma

Motion of a small charged absorbing body (micrograin) immersed in a stationary weakly ionized high pressure plasma environment is considered. It is shown that the total frictional (drag) force acting on the grain can be directed along its motion, causing the grain acceleration. At some velocity, the...

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Bibliographic Details
Published in:Physical review letters 2008-02, Vol.100 (5), p.055002-055002, Article 055002
Main Authors: Vladimirov, S V, Khrapak, S A, Chaudhuri, M, Morfill, G E
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
COLLISIONAL PLASMA
PLASMA SIMULATION
SUPERFLUIDITY
VELOCITY
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Summary:Motion of a small charged absorbing body (micrograin) immersed in a stationary weakly ionized high pressure plasma environment is considered. It is shown that the total frictional (drag) force acting on the grain can be directed along its motion, causing the grain acceleration. At some velocity, the forces associated with different plasma components can balance each other, allowing free undamped superfluid motion of the grain. The conditions when such behavior can be realized and the possibility of a superconductive grain current are discussed in the context of complex (dusty) plasmas.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.100.055002