Generation and propagation of high-current low-energy electron beams

V. N. Devyatkov, N. N. Koval, P. M. Schanin, V. P. Grigoryev, T. V. Koval

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

High-current electron beams with a current density of up to 100 A/cm2 generated by a plasma-cathode gas-filled diode at low accelerating voltages are studied. Two types of gas discharges are used to produce plasma in the cathode. With glow and arc discharges, beam currents of up to 150 A and 400 A, respectively, have obtained at an accelerating voltage of 16 kV and at a pressure of 1-3·10-2 Pa in the acceleration gap. The ions resulting from ionization of gas molecules by electrons of the beam neutralize the beam charge. The charge-neutralized electron beam almost without losses is transported over a distance of 30 cm in a drift channel which is in the axial magnetic field induced by Helmholtz coils. The results of calculations for the motion of electrons of the charge-neutralized beam with and without axial external field are presented and compared with those of experiments.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalLaser and Particle Beams
Volume21
Issue number2
DOIs
Publication statusPublished - 2003

Fingerprint

high current
Electron beams
Cathodes
Ionization of gases
electron beams
Plasmas
propagation
Electrons
Electric potential
cathodes
Gases
Discharge (fluid mechanics)
Diodes
Current density
arc discharges
gas discharges
electric potential
Magnetic fields
beam currents
gases

Keywords

  • Arc discharge
  • Electron beam
  • Gas-filled diode
  • Glow discharge
  • Plasma cathode

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

Cite this

Generation and propagation of high-current low-energy electron beams. / Devyatkov, V. N.; Koval, N. N.; Schanin, P. M.; Grigoryev, V. P.; Koval, T. V.

In: Laser and Particle Beams, Vol. 21, No. 2, 2003, p. 243-248.

Research output: Contribution to journalArticle

Devyatkov, V. N. ; Koval, N. N. ; Schanin, P. M. ; Grigoryev, V. P. ; Koval, T. V. / Generation and propagation of high-current low-energy electron beams. In: Laser and Particle Beams. 2003 ; Vol. 21, No. 2. pp. 243-248.
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