On the theory of dynamics of dust grain in plasma . Physics of Plasmas Volume 20, Issue 3, March 2013, Article number 033702

14 сентября 2018
163
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Вид публикации Статья
Контактные данные автора публикации Stepanenko, A.A.a, Krasheninnikov, S.I.b a National Research Nuclear University MEPhI, Moscow, Russian Federation b University of California San Diego, San Diego
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Аннотация

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. © 2013 American Institute of Physics.



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Indexed keywords

Dynamic equilibria; Forces and torques; General expression; Large-grain; Oblate spheroid; Plasma particles; Small grains; Theory of dynamics
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