Engineering Physics Annotation << Back ON CHARGING PARTICLES OF DUSTY PLASMA UNDER THE INFLUENCE OF AN ELECTRON BEAM S.I. KOPNIN, T.I. MOROZOVA, S.I. POPEL A model has been developed that describes the charging of dust particles under the infl uence of beam electrons with a characteristic energy of about 25 keV. It turns out that under the infl uence of a suffi ciently intense of beam electrons, dust particles in the plasma can acquire an anomalously high charge. It is established that in addition to the current of the electron beam, as well as the fl uxes of electrons and ions of the surrounding plasma to the dust particle (described in the framework of the probe model), the current of fi eld emission is the most important current affecting the magnitude of the charge of a dust particle. It is this current that signifi cantly reduces the magnitude of the negative charge on the dust particle. The established result is qualitatively confi rmed by the conducted experiments on anomalously high charging of dust particles [1]. Key words: dusty plasma, anomalously high charging, fi eld emission. Contacts: E-mail: serg_kopnin@mail.ru Pp. 38-43.