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The superhigh charging of dust particles under direct stimulation by an electron beam is experimentally performed and investigated. The energy of beam electrons amounts to 30.8 keV, with the typical diameter of alumina macroparticles employed in the experiment of 100 µm. The charge acquired by a dust particle amounts to 1.2 • 10 7 electron charges; this corresponds to charge of 2.4 • 10 5 electron charges for micron-sized particles, which is nearly two orders of magnitude higher than the typical values of the charge of particles of the same size in gas discharges.

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