The stochastic energy acquired by an isolated charged macroparticle (“dust” particle) due to electrostatic fluctuations of a weakly ionized plasma is investigated. Analytic relations are derived and numerical modeling of the problem for the conditions close to those of typical laboratory experiments in a complex dusty plasma is done. The study demonstrates that the kinetic energy of a dust particle, induced by the considered effect, can significantly exceed the temperature of the background gas. The most important contribution to the energy acquired by the macroparticle is due to the ion plasma component.
Laser-produced plasma cloud evolution in a magnetic field is investigated up to 3 kg using photographs and spectroheliograms. Generation of a plasma jet, oriented across the magnetic field, was detected, whose emission increases with the field strength and is more distinct for multicharged ions. The effects of the field on the interaction of closely located laser-produced plasma clouds were studied as well. The results of numerical analysis comply with experimental data on plasma behavior in the magnetic field.
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