THE SOURCES OF LOW-ENERGY, HIGH-CURRENT ELECTRON BEAMS WITH PLASMA ANODE

2018 ◽  
Author(s):  
Grigorii Ozur ◽  
Keyword(s):  
Electron Beams ◽  
Low Energy ◽  
High Current ◽  
Plasma Anode ◽  
Current Electron ◽  
High Current Electron

Thermocapillary model of formation of nanostructures on the surface irradiated by low-energy high-current electron beams

2019 ◽  
Vol 6 (7) ◽  
pp. 076551 ◽  
Author(s):  
Vladimir Sarychev ◽  
Sergey Nevskii ◽  
Sergey Konovalov ◽  
Alexey Granovskii ◽  
Victor Gromov
Keyword(s):  
Electron Beams ◽  
Low Energy ◽  
High Current ◽  
Current Electron ◽  
High Current Electron

Use of low-energy, high-current electron beams for surface treatment of materials

1997 ◽  
Vol 96 (1) ◽  
pp. 117-122 ◽  
Author(s):  
D.I. Proskurovsky ◽  
V.P. Rotshtein ◽  
G.E. Ozur
Keyword(s):  
Surface Treatment ◽  
Electron Beams ◽  
Low Energy ◽  
High Current ◽  
Current Electron ◽  
High Current Electron

scholarly journals Production and application of low-energy, high-current electron beams

2003 ◽  
Vol 21 (2) ◽  
pp. 157-174 ◽  
Author(s):  
G.E. OZUR ◽  
D.I. PROSKUROVSKY ◽  
V.P. ROTSHTEIN ◽  
A.B. MARKOV
Keyword(s):  
Electron Beams ◽  
Low Energy ◽  
Nonstationary Temperature ◽  
High Current ◽  
Surface Layers ◽  
Explosive Emission ◽  
Energy Density Distribution ◽  
Structure Phase ◽  
Current Electron ◽  
High Current Electron

This article reviews experiments on the production of low-energy, high-current electron beams (LEHCEB) and their use for surface modification of materials. It is shown that electron guns with a plasma anode and an explosive emission cathode are most promising for the production of this type of beams. The problems related to the initiation of explosive emission and the production and transportation of LEHCEBs in plasma-filled diodes are considered. It has been shown that if the rise time of the accelerating voltage is comparable to or shorter than the time it takes for an ion to fly through the space charge layer, the electric field strength at the cathode and the electron current density in the layer are increased. Experimentally, it has been established that the current of the beam transported in the plasma channel is 1–2 orders of magnitude greater than the critical Pierce current and several times greater than the chaotic current of the anode plasma electrons. Methods for improving the uniformity of the energy density distribution over the beam cross section are described. The nonstationary temperature and stress fields formed in metal targets have been calculated. The features of the structure-phase transformations in the surface layers of materials irradiated with LEHCEBs have been considered. It has been demonstrated that in the surface layers quenched from the liquid state, nonequilibrium structure-phase states are formed.

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