TITLE

On the theory of dynamics of dust grain in plasma

AUTHOR(S)
Stepanenko, A. A.; Krasheninnikov, S. I.
PUB. DATE
March 2013
SOURCE
Physics of Plasmas;Mar2013, Vol. 20 Issue 3, p033702
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The dynamics of rotationally symmetric dust grains in plasma embedded in a magnetic field are of concern. The general expressions for forces and torques acting on dust are found. It is shown that dust spinning is determined by torques related to both the Lorentz force (dominant for relatively small grains) and the gyro-motion of plasma particles impinging the grain (which prevails for large grains). The stability of grain spinning is analyzed and it is shown that, for some cases (e.g., oblate spheroid), there is no stable dynamic equilibrium of grain spinning.
ACCESSION #
86447086

 

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