Behaviors of positively charged fine particles in a cross field sheath between magnetized double plasmas

Details Behaviors of positively charged fine particles in a cross field sheath between magnetized double plasmas Behaviors of positively charged fine particles in a cross field sheath between magnetized double plasmas

2004-11-09

arxiv.org/abs/physics/0411092v1

Physics

Plasma Physics

12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)

Scientific paper

Dependencies of levitation position of positively charged fine-particles on plasma parameters are investigated. The charges on the particles become positive in a cross-field sheath between magnetized double plasmas with different potentials separated vertically by horizontal magnetic field, because ion current flowing from a lower high-potential plasma surpasses electron current coming across the magnetic field from an upper low-potential plasma. From measurement of the resonance frequency of the particles driven by external oscillating electric field, the charge on particle is estimated to be of the order of 10e2. Variation of particle levitation positions can be explained by the change of the charges.

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