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Two mechanisms of dust particle spin up in uniform magnetized plasma associated with ion gyromotion and j⃗×B⃗ force caused by cross-field current flowing through the grain are discussed. Estimations made for the conditions of a tokamak-edge plasma show that such mechanisms can spin up dust particles to characteristic rotation frequencies ∼106s−1.
S. I. Krasheninnikov (Wed,) studied this question.