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Generating a low-energy high-current electron beam in a gun having a plasma anode

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Abstract

Research has been done on major physical processes governing the scope for generating magnetized low-energy high-current electron beams in a plasma-filled system. Conditions are considered for efficient excitation of the explosive electron emission at a large-area cathode at low accelerating voltages, together with the trends in beam formation in the nonstationary double layer formed between the cathode and anode plasmas, as well as the beam transport to the collector in the inhomogeneous guiding plasma. It is found that a gun having a plasma anode enables one to generate wide-aperture electron beams of microsecond duration having a mean electron energy of 10–20 keV and an energy density of up to 20 J/cm2 or more, which goes with homogeneity sufficient for technological purposes.

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High-Current Electronics Institute, Siberian Branch, Russian Academy of Sciences. Translated from Izvestiya Vysshikh, Fizika, No. 3, pp. 100–114, March, 1994.

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Nazarov, D.S., Ozur, G.E. & Proskurovskii, D.I. Generating a low-energy high-current electron beam in a gun having a plasma anode. Russ Phys J 37, 283–294 (1994). https://doi.org/10.1007/BF00565739

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  • DOI: https://doi.org/10.1007/BF00565739

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