Electron Sources with Plasma Grid Emitters: Progress and Prospects

Russian Physics Journal (2021)Cite this article

Operational principles and main characteristics of electron sources based on plasma emitters with grid/layer stabilization of the boundary of the emission plasma generated by low-pressure discharges are described. The achieved levels of the parameters and the prospects for future development of the electron sources intended for generation of pulsed high-density (with energy density up to 100 J/cm2 per pulse) low-energy (5–25 keV, 50– 500 A) and high-energy high-current (up to 100 keV,\( \tilde{>} \) 1 kA) electron beams in vacuum with beam energy content up to 5 kJ, pulse frequency (30 μs, 50 s–1), large beam cross section \( \left(\tilde{>}\ 1000\ {\mathrm{cm}}^2\right), \) electron energy up to 250 keV, and current up to 100 A extracted into the ambient atmosphere through an output foil window are considered. The special features of emission plasma generation by low-pressure arc discharges in plasma grid emitters and of electron output from it, the special features of the discharge system of plasma emitters partially immersed into an inhomogeneous magnetic field, and the special features of the formation and transportation of high-density low-energy electron beams in a longitudinal magnetic field are considered. The application field of the electron sources with plasma grid emitters and the processes and technologies implemented with their use are indicated.

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  1. Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    N. N. Koval, V. N. Devyatkov & M. S. Vorobyev

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  1. N. N. Koval
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  2. V. N. Devyatkov
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  3. M. S. Vorobyev
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Correspondence to N. N. Koval.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No.10, pp. 7–16, October, 2020.

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Koval, N.N., Devyatkov, V.N. & Vorobyev, M.S. Electron Sources with Plasma Grid Emitters: Progress and Prospects. Russ Phys J (2021). https://doi.org/10.1007/s11182-021-02219-3

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Keywords

  • plasma grid emitter
  • pulsed electron source
  • electron beam formation and transportation
  • material surface modification by a pulsed electron beam
  • electron beam put into the atmosphere
  • work-hardening technologies
  • radiation technologies