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Article
Negative Current Feedback in the Accelerating Gap in Electron Sources with a Plasma Cathode
Using the example of an electron source with a plasma cathode based on a low-pressure arc discharge with grid stabilization of the cathode/emission plasma boundary and an open anode/beam plasma boundary, a mec...
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Article
Computer Simulation of High-Current Non-Selfsustained Glow Discharge Plasma in Hollow Cathode at Low Pressure
The paper presents results of computer simulation and experimental measurements of the concentration distribution of high-current non-self-sustained glow discharge plasma generated in the hollow cathode at low...
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Article
Control of the Electron Beam Density Distribution on the Collector in Sources with a Grid Plasma Cathode Based on a Low-Pressure Arc
An experimental and theoretical study is carried out to control the distribution of electron beam current density in a SOLO source with a plasma cathode based on a low-pressure arc discharge with grid stabiliz...
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Article
Change in the Properties of BSR-3M Binder in VKU-46 Carbon-Fiber-Reinforced Polymer after Prolonged Climatic Aging
The change in the state of VSR-3M binder used as a basis of VKU-46 samples exposed for 5 years in two climatic zones was studied by gravimetric, thermomechanical, and profilometric analyses. Such parameters as...
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Article
Spatiotemporal Dynamics of a Low-Pressure Arc and a Generated Beam in an Electron Source with a Grid Plasma Emitter
The article presents results of studying the dynamics of a submillisecond low-pressure arc discharge in an electron source with a grid plasma emitter and a plasma anode, as well as the formation of an electron...
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Article
Transport of a Low-Energy Ion Beam with Ballistic Focusing
Transport of an ion beam in a hemispherical equipotential drift space is studied by the PiC method. It is shown that the collector current transfers into a pulsed mode caused by the dynamic processes of the fo...
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Article
Modeling Transport in a System with Ballistic Focusing of a High Intensity Beam of Metal Ions
Major patterns of ion beam transport in a system with ballistic focusing are studied via numerical modeling. It is shown that the efficiency of transporting a beam of metal ions at 0.66 A and an ion energy of ...
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Article
Experimental and Numerical Study of the Impact of a Pulsed Electron Beam on Titanium and Aluminum Targets
The surface temperatures of specimens made of A7 grade aluminum alloy and VT1-0 grade titanium alloy are measured with a high-speed infrared pyrometer during the impact of a pulsed electron beam with different...
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Article
Electrical-percolation effects in epoxy resin/ion-exchange resin/polyaniline anticorrosion composite materials
A new type of epoxy–polyelectrolyte anticorrosion protective material based on epoxy resin, ion-exchange resin, and polyaniline has been studied. Electrical-percolation transitions are observed after submergin...
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Article
The effect of a counterion in a protective moisture-sensitive epoxy–polyelectrolyte/epoxy–carbon sandwich system
In this work, the effect of the ionic form of a KU 2-8 synthetic cation-exchange polyelectrolyte, which was used as a filler in the moisture-sensitive layer, on the behavior of two-layer anticorrosion systems ...
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Article
Excitation of the TE11 mode in a triode with a virtual cathode
Excitation of the TE11 mode in a triode with a virtual cathode is theoretically and experimentally studied. Structures of fields, resonance frequencies, excitation of electromagnetic waves, and energy transmissio...
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Article
Sha** of the cross section of a nonrelativistic high-current electron beam by means of return current leads
Calculation results and experimental data on sha** the cross-section of a nonrelativistic (10–30 keV) high-current (up to 25 kA) electron beam are presented. A circular beam is successfully transformed into ...
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Article
Formation and transportation of low-energy high-current electron beams in the plasma-filled diode under the effect of the external magnetic field
The mechanisms behind limitation of current of nonrelativistic high-current electron beams in the plasma-filled diode immersed in the external guiding magnetic field whose intensity is comparable with that of ...
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Article
On the possibility of TEM mode excitation in a virtual-cathode triode
It is demonstrated theoretically and experimentally that generation of the TEM mode in a virtualcathode triode is a possibility. Conditions favoring TEM mode excitation in the domain where an electron beam int...
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Article
Transport and focusing of a low-energy electron beam in low-pressure ionized argon
The transport and focusing of low-energy electron beams with effective transfer of stored energy in low-pressure ionized argon are investigated under the conditions of a high degree of charge neutralization in...
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Article
Effect of the anode-current magnetic field on the motion of electrons in a triode with a virtual cathode
The effect of the anode-current magnetic field on the electron motion in a triode with a virtual cathode is considered. It is shown that the anode-current magnetic field influences the oscillation period and t...
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Article
Influence of the magnetic field of current extracting systems on motion of an electron beam
In the present work, the influence of the magnetic field of current extracting systems on motion of electrons and envelope of the electron beam transported in preliminary created plasma in an external longitud...
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Article
Groups Proper Nonmaximal Subgroups of Which Are Cyclic or Minimal Noncyclic
We constructively describe locally graded groups all proper nonmaximal subgroups of which are cyclic or minimal noncyclic.
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Article
Excitation of parametric oscillations in a triode with a virtual cathode with an external electromagnetic wave
The electromagnetic radiation of an electron flow in a triode with a virtual cathode is studied from the viewpoint of a parametric resonance. It is shown that the phase modulation of the electrons and the radi...
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Article
Radiation of a flow of oscillating electrons in the excitation of parametric oscillations
A study is made of phase modulation of an electron flow and the saturation of coherent radiation in such a flow after parametric excitation in a nonlinear system. Expressions are obtained for the intensity of ...
