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Interaction of a dielectric macroparticle with a point charge in plasma

机译:介电质大颗粒与等离子体中的点电荷的相互作用

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The electrostatic interaction of a charged spherical dielectric macroparticle with a point charge in a plasma in the presence of an external uniform electric field is considered. The electrostatic force and the torque acting on the macroparticle have been determined, and the form of the interaction potential has been established for a nonuniform distribution of free charge on the macroparticle surface. A simple (for calculations) expression for the interaction potential that describes well the exact potential at all interparticle distances is proposed. The angular velocity of the spinning of dust particles caused by a nonuniform distribution of free charge over their surface has been estimated.
机译:考虑到在外部均匀电场的存在下,带电球形介电大粒子与等离子体中的点电荷的静电相互作用。已经确定了作用在大颗粒上的静电力和转矩,并且已经建立了相互作用势的形式,以使自由电荷在大颗粒表面上不均匀分布。提出了一个简单的(用于计算)相互作用势的表达式,该表达式很好地描述了所有粒子间距离的精确势。已经估计出由于尘埃颗粒在其表面上的不均匀分布而导致的尘埃颗粒旋转的角速度。

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