scholarly journals Токовые характеристики сильноточной электронной пушки с многоканальным инициированием взрывной эмиссии пробоем по поверхности диэлектрика

2021 ◽  
Vol 91 (11) ◽  
pp. 1764
Author(s):  
В.И. Петров ◽  
П.П. Кизириди ◽  
Г.Е. Озур
Keyword(s):  
Electron Gun ◽  
Arc Plasma ◽  
High Current ◽  
Explosive Emission ◽  
Plasma Sources ◽  
Cathode Assembly ◽  
Explosive Emission Cathode ◽  
Current Electron ◽  
Emission Cathode ◽  
High Current Electron

Current characteristics of a plasma-filled, high-current electron gun with a new cathode assembly which can be named as a controlled explosive-emission cathode have been investigated. Multi-gap initiation of explosive emission is performed with the use of parallel operated, resistively decoupled arc plasma sources which electrodes and tube ceramic isolators are built-in to the explosive-emission cathode. The initiation of explosive emission was performed using 69 operating in parallel arc plasma sources whose electrodes and tubular ceramic insulators are inserted to the disk explosive-emission cathode. Experiments have demonstrated operability of high-current electron gun with a new cathode assembly at accelerating voltage up to 30 kV and its good emissivity (average in area current density) which was approximately 1.4–2.4 times higher than an emissivity of traditional electron gun with plasma anode and multi-wire copper cathode.

scholarly journals Катодный узел сильноточной электронной пушки с многоканальным инициированием эмиссии пробоем по поверхности диэлектрика

2020 ◽  
Vol 46 (15) ◽  
pp. 47
Author(s):  
П.П. Кизириди ◽  
Г.Е. Озур
Keyword(s):  
Electron Gun ◽  
High Current ◽  
Explosive Emission ◽  
Plasma Anode ◽  
Traditional Scheme ◽  
Cathode Assembly ◽  
Explosive Emission Cathode ◽  
Current Electron ◽  
Emission Cathode ◽  
High Current Electron

A new scheme of the cathode assembly of a high-current electron gun is presented. Initiation of explosive emission is performed with the help of sixty nine simultaneously operating spark gaps which electrodes and tube ceramic isolators are inserted into a disc explosive-emission cathode. The operability and high emissivity of the cathode assembly which exceeds by 1.5‒1.7 times the value inherent in traditional scheme of an electron gun with plasma anode and copper-braid explosive-emission cathode has been demonstrated.

scholarly journals Характеристики сильноточной электронной пушки с плазменным анодом на основе гибридного разряда

2020 ◽  
Vol 90 (2) ◽  
pp. 312
Author(s):  
П.П. Кизириди ◽  
Г.Е. Озур
Keyword(s):  
Temporal Dynamics ◽  
Space Structure ◽  
Electron Gun ◽  
High Current ◽  
Energy Density Distribution ◽  
High Current Electron Beam ◽  
Plasma Anode ◽  
Explosive Emission Cathode ◽  
Current Electron ◽  
High Current Electron

In the paper, the results of the study of space structure and temporal dynamics of a hybrid discharge matching a high-current reflective discharge with vacuum arcs initiated by surface dielectric flashover at the discharge supplying voltages up to 9 kV and working gas (argon) pressures of 0.1 – 1 mTorr are presented. The possibility of the formation of plasma anode with the density increased at the periphery including the use of an auxiliary screen has been demonstrated. The measurements of energy density distribution of a low-energy, high-current electron beam formed in an electron gun with explosive-emission cathode and plasma anode based on this hybrid discharge are also presented. The results obtained are comparable with those achieved with the use of magnetic field concentrators. Since the use of concentrators is not always possible, so the suggested method of the beam uniformity improvement looks promising.

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