Superhigh dust charging by high-voltage electron beam
Institution of the Russian Academy of Sciences Joint Institute for High Temperatures of RAS 125412, Moscow, Russia
2 Moscow Institute of Physics and Technology (State University) - 113303, Moscow, Russia
Accepted: 16 April 2011
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 1.2·107 electron charges; this corresponds to charge of 2.4·105 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.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.25.Tx – Emission, absorption, and scattering of particles / 52.70.Nc – Particle measurements
© EPLA, 2011