Anatoli S. Shlapakovski

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The results of investigations of a double-gap vircator driven by a 20 Ω and 500-ns generator operating in the output voltage range 400-600 kV are presented. The vircator generated microwave pulses with a peak power of up to 200 MW at ~5% efficiency and the frequency varied from 2.0 to 2.3 GHz depending on the cavity geometry. The limitations on the(More)
The behavior of a six vane relativistic magnetron with a single radial output slot has been studied in detail by 3D PIC simulations. We find that a delicate electro-dynamic imbalance caused by impedance mismatch is responsible for the shortening of the radiated power pulse. When the power pulse drops the voltage reduces and the current increases which(More)
Pulsed intense ion beams have been developed for applications including surface modification and alloying, and thin-film and nanopowder synthesis. Rapid thermal processing with ions is quite promising for large-scale commercial use, due to the high specific ion energy deposition (joules per cubic centimeter) without reflection, and to the relative(More)
Plasma evolution in the interference switch of an S-band pulse compressor operating in the frequency of 2.766 GHz, with input pulses of 200-450-kW power and duration of 2.4 &#x03BC;s, was studied experimentally and in numerical simulations. The system was filled with dry air at 2 &#x00D7; 10<sup>5</sup>-3 &#x00D7; 10<sup>5</sup>-Pa pressure. The plasma(More)
The behavior of a six-vane relativistic magnetron with a single radial output slot has been studied in detail by 3-D particle in cell simulations. It is found that a delicate power imbalance caused by the pulsed-power generator and magnetron impedance mismatch is responsible for the shortening of the radiated power pulse. Pulse shortening can be avoided(More)
Resonant microwave pulse compressors producing output pulses of megawatt-to-gigawatt peak power with high (tens and hundreds) power gain operate at high pressures of a background gas filling a compressor's cavity and switch<sup>1</sup>. Meanwhile, at present, there is no clear understanding of processes governing the plasma formation and ultimately(More)
Summary form only given. The pulsed electron beam facility GESA IV generates radially converging beams by means of a cylindrically shaped explosive emission cathode. Along the cylinder axis a rod-shaped target serves as anode of the triode system. In this study, the generation, homogeneity, dynamics, and stability of electron beams in GESA IV are(More)
Summary form only given. The influence of laser beam parameters on output pulses of a resonant microwave compressor with laser-triggered plasma switch was investigated. The experimental setup comprised the S-band rectangular waveguide-based cavity and H-plane waveguide tee with the shorted side arm as an interference switch. The system filled with(More)
The linear theory of a dielectric Cherenkov maser with a plasma layer has been developed. The dispersion relation has been derived for the model of infinitely thin, fully magnetized, monoenergetic hollow electron beam, in the axisymmetric case. The results of the numerical solution of the dispersion relation and the analysis of the beam coupling to hybrid(More)
Some results of the experiments on thin film deposition using pulsed high-power ion beam (HPIB) are reported. Ti, Nb, Pt, and C films were produced from ablation plasma generated under the action of pulsed HPIB on a surface of ablated materials. We are developing the combined technology that deals with cleaning a substrate surface by HPIB, thin film(More)