Effect of collector potential on the beam-plasma formed by a forevacuum-pressure plasma-cathode electron beam source

AbstractWe describe here the design, main parameters, and characteristics of a forevacuum-pressure plasma-cathode electron source based on a hollow-cathode discharge. The source generates a continuous focused electron beam with energy up to 30 keV and current up to 300 mA at a pressure of 10–50 Pa. The focused electron beam reaches a maximum power density of 106 W/cm2. The source utility has been demonstrated by its application for processing and cutting of ceramic.

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Features of the Formation of a Focused Electron Beam by a Forevacuum-Pressure Plasma-Cathode Source With Single Emission Channel

IEEE Transactions on Plasma Science ◽

10.1109/tps.2021.3139344 ◽

2022 ◽

pp. 1-6

Author(s):

Ilya Yu. Bakeev ◽

Aleksandr S. Klimov ◽

Efim M. Oks ◽

Aleksey A. Zenin

Keyword(s):

Electron Beam ◽

Plasma Cathode ◽

Pressure Plasma ◽

Emission Channel ◽

Single Emission

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Electron Beam Sintering of Zirconia Ceramics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.872.150 ◽

2013 ◽

Vol 872 ◽

pp. 150-156 ◽

Cited By ~ 11

Author(s):

Victor Burdovitsin ◽

Edgar S. Dvilis ◽

Aleksey Zenin ◽

Aleksandr Klimov ◽

Efim Oks ◽

...

Keyword(s):

Grain Size ◽

Electron Beam ◽

Zirconium Dioxide ◽

Sintered Material ◽

Sintering Temperature ◽

Vacuum Pressure ◽

Zirconia Ceramics ◽

Beam Source ◽

Plasma Cathode ◽

Sintering Conditions

The work demonstrated the sintering of zirconium dioxide ceramics by means of an electron beam produced by a plasma-cathode e-beam source operating at fore-vacuum pressure. The sintered ceramics consist of tetragonal-modified zirconium dioxide with grain size from 0.7 to 10 micrometers, depending on the sintering conditions. At constant sintering temperature, the density of the material and its grain size depend on the integrated energy injected into the sintered material by the electron beam.

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Suppression by low-energy thermionic electrons of instabilities in the transport of a high-power electron beam in the forevacuum pressure range.

Plasma Sources Science and Technology ◽

10.1088/1361-6595/ac3969 ◽

2021 ◽

Author(s):

Aleksey Zenin ◽

Ilya Bakeev ◽

A. S. Klimov ◽

E M Oks

Keyword(s):

Electron Beam ◽

Electron Temperature ◽

High Power ◽

Pressure Range ◽

Plasma Discharge ◽

Plasma Electron ◽

Low Energy ◽

Plasma Cathode ◽

Beam Plasma ◽

Order Of Magnitude

Abstract We report here the results of our studies on the effect of injection of low-energy thermionic electrons on the suppression of instabilities of the beam-plasma discharge type in a beam-plasma during the transport of a powerful continuous electron beam generated by a plasma-cathode electron source in the forevacuum range of pressure. As result of thermionic electron injection, the plasma electron temperature decreased to 0.3 eV and the plasma density decreased by an order of magnitude to 10^15 m-3. The minimal thermoelectron current required for suppressing the beam-plasma discharge increases with increasing emission current and decreases with increase of the beam accelerating voltage.

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