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In recent years, considerable interest has arisen in applications of magnetic insulation to the transport of electromagnetic pulses in vacuum transmission lines. Such lines provide, in principle, the highest power densities of transported energy with quite moderate losses. In the present paper, the results of theoretical and experimental investigations of vacuum transmission lines, performed in part...
Plasma compression in the diode of the 2.1010 W high-current electron accelerator "Don" was investigated. Plasma of 2.1015 cm−3 electron density was obtained by the focussing of a neo-dymium glass laser beam onto the surface of an Al-cathode. Formation of dense pinched plasma was observed by means of five-frame exposure, Q-switched, ruby laser interferometry and shadow photography. Plasma...
There has been investigated a wave regime of operation of vacuum transmission lines in the presence of a supplemental magnetic field due to a current from an external source applied to the central electrode of the coaxial line. Experiments were performed in the 100–600 kV voltage range. The introduction of a supplemental magnetic field makes it possible to control the propagation velocity of the wave...
The generation of the powerful radiation is described. Due to diffraction extraction of radiation the effective magnetron length was increased and together with suitable choice of the working point it gives the possibility to operate with large currents. To feed the magnetron the accelerator ERG was used: it can yield into loading the current up to 40 kA at voltage 1 MV. Having anode voltage 0.95...
Many important physical and technical problems are related to beam transportation in vacuum channels, energy transportation in vacuum transmission lines, and to possibilities of energy and power compression. All these problems require a common approach, e.g., control of high-current electron flows in a two-electrode geometry. We discuss here some related investigations carried out in the P. N. Lebedev...
One can increase considerably the energy of a portion of beam electrons by means of the autoacceleration mechanism. In our experiments, an electron accelerator with parameters 0.5–1.0 MeV, 20–30 kA, 40–50 ns was used. A hollow beam was passed through a diaphragmed waveguide. At its output, the electron spectrum and microwave spectrum were measured simultaneously. About 101 of the electrons increase...
Various collective methods have been investigated (theoretically and experimentally). Two separate channels with pulsed electron beam of 0. 5–1. 0 MeV and 20–30 kA were used.
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