Anton A. Elchaninov

Anton A. Elchaninov
Institute of High Current Electronics, Russian Academy of Sciences | IHCE

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38
Publications
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757
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February 1992 - present

Publications

Publications (38)
Article
Full-text available
This paper presents the results of numerical and experimental study of a Ka-band relativistic Cherenkov oscillator with average diameter of the slow-wave structure D ≈ 2.6λ. (λ is a wavelength). The combined mode selection including the diffraction loss in the electron diode was applied. The high-current accelerator SINUS-200 provided the thin-wall...
Article
Full-text available
The paper describes the numerical and experimental results of the microwave O-type oscillator based on an oversized slow wave structure (SWS). The feedback is applied to the design scheme, which provides intense modulation of the electron beam in the cathode-anode region and two special cavities before SWS. The selectivity of TM02 operating mode oc...
Article
Full-text available
Phase and frequency stability of electromagnetic oscillations in sub-gigawatt superradiance (SR) pulses generated by an extensive slow-wave structure of a relativistic Ka-band backward-wave oscillator were experimentally investigated. Data on the frequency tuning and radiation phase stability of SR pulses with a variation of the energy and current...
Article
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The design of L-S-band and X-band microwave calorimeters with an ethanol-based working fluid is described. The calorimeters are automatically controlled and have an improved wide-aperture load that absorbs microwave radiation.
Conference Paper
Full-text available
First version of relativistic BWO with TM 02 operating mode has been tested also in [1]. The cyclotron-resonance mode selection was used. In this case, because of requirement to the defined values of magnetic field and e-beam radius, the efficiency of oscillator was not very high (approximately 10%). Now, the different electrodynamic codes are avai...
Article
Full-text available
Plasma-filled diode regarded as perspective source of electron beam feeding HPM generator of GW power level, comparing to conventional explosive emission vacuum diode. Electron beam generation occurs in plasma double layer, where plasma boundary plays as an anode. It allows cancelling the usage of anode foils or grids in HPM generators with the vir...
Article
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We review the studies of phase stabilization of a pulsed relativistic backward-wave oscillator (BWO) excited by the feed voltage with a steep front. Results of radiation phase stabilization are compared with the results of in-phase excitation of two independent nanosecond relativistic microwave backward-wave oscillators of the 8-mm wavelength range...
Article
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The theoretical premises and experimental results of phase control in high-power microwave oscillators with nanosecond pulse duration are presented. In experiments, two-channel backward wave oscillators (BWOs) for both steady state (100-150 cycles) and super-radiance (SR) mode operation (10-20 cycles) are discussed. For the phase control, the shift...
Article
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Coherent summation of microwave beams has been demonstrated for two superradiance Ka-band backward wave oscillators producing over 700 MW of power. The explosive emission cathodes of the e-beam injectors were powered by stable splitted voltage pulses produced by an all-solid-state modulator. The voltage fronts were shortened to 300 ps in controlled...
Article
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The coherent composition of the wave beams of two relativistic nanosecond backward wave tubes (BWTs) with an 8-mm range and peak power in each channel of up to 230 MW is implemented. A specific feature of this experiment was power supply of explosive-emission cathodes by split pulses supplied by a completely solid-phase SOS modulator with reduced a...
Article
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The possibility of in�phase excitation of two independent nanosecond�pulsed relativistic 37�GHz backward�wave oscillators (BWOs) with high�current electron beams has been studied. This regime can be achieved using BWO switching with a picosecond precision. It is shown that long�term (up to 100–200 peri� ods of the field) phase locking in each chann...
Article
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A two-channel source of Cherenkov superradiance pulses with the electron-wave systems of identical geometry which is capable of producing 2*0.3GW pulses of duration 2 ns and center frequency 10 GHz has been developed and explored. The channels are powered by a high-voltage driver whose pulse is split into two pulses that are sent through parallel t...
Article
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To provide controllable shortening of the cathode voltage rise time in two channels of superradiative oscillators, ferrite-loaded sections of a coaxial transmission line with a bias magnetic field were used. Saturation of the ferrites in the longitudinal direction was provided by a dc magnetic field of 50 kA/m. A nonlinear line of length 30 cm was...
Article
Full-text available
The possibility of developing a two-channel nanosecond relativistic microwave oscillator with a phase stability in each channel sufficient for coherent summation of their electromagnetic fields is demonstrated experimentally. In experiments, vacuum diodes of two independent superradiant backward wave oscillators operating in 10-GHz frequency range...
Article
We present the results of testing a new thermoacoustic sensor designed to detect microwave pulses having durations from 3 to 120 ns at wavelengths of 0.8 and 3 cm. Operation of the sensor is based on the effect of generation of acoustic signals during absorption of microwave pulses in a radiotransparent substrate–absorber–liquid layered structure ....
Conference Paper
Recent studies of the generation of GW-level nanosecond microwave pulses in extended BWO-type slow-wave structures have been showed an opportunity for stabilization of the RF field phase. Decline in the dependence of the output microwave power on the electron energy in this operation mode allows reaching radiation peak power spread not exceeding vo...
Article
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The paper describes the design of an alcohol-filled automatically controllable X-band calorimeter with a three-layer wide-aperture load of increased absorbability.
Conference Paper
Full-text available
The operation of a nonstationary relativistic X-band BWO in the mode of production of quasicontinuous superradiation pulse trains has been studied. The average power of superradiation pulses generated by packets of duration 10–100 s with a repetition rate of 300 Hz was ∼1 kW. The radiation peak power reached ∼3 GW. When the device operated in a red...
Article
The superradiative regime of relativistic BWO allows achieving not only extremely high microwave power but under some conditions also the very stable parameters (peak power, central frequency and RF phase relatively voltage rise time) from one pulse to another. The moderately dispersive spread of group velocities in the frequency band of short micr...
Article
The effect of 13 Hz repetition rate X-ray pulses with 3 x 10(-6)-1.5 x 10(-4) Gr per pulse dose during 5 minute on drosophila's larvae and on pupae vas investigated. It was shown that the effect depends on drosophila's age as well as on X-ray dose and manifests itself in variation of life expectancy and fertility.
Article
Full-text available
The generation of short electromagnetic pulses excited in an extended slow-wave system (SWS) of a relativistic backward wave tube (BWT) operating in the so-called superradiance regime with a carrier frequency of 3.7 GHz has been simulated and experimentally studied. At a decreased magnetic field (about 0.2 T) in the SWS, the BWT generated 2.5-ns mi...
Article
Full-text available
We study the generation of electromagnetic pulses with a carrier frequency of 3.7 GHz in a relativistic backward-wave oscillator with a long slow-wave system in the superradiance regime of super-radiation for a magnetic induction of 0.2 T (below the cyclotron resonance). To decrease transverse velocities of the electrons, we use decompression of a...
Article
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Theoretical investigation of a short electron beam (extended bunch) interaction with a backward wave propagating in a slow wave structure demonstrates the possibility of producing ultrashort superradiance pulses with a peak power which exceeds the power of the driving beam (conversion factor K>1). It is shown that a nonuniform slow wave structure w...
Article
Full-text available
Techniques developed in the Institute of High Current Electronics for measurement of the parameters of X-band microwave pulses with a peak power as high as 10 8 – 10 9 W is described in the manuscript.
Article
Effects of repetitive X-ray and microwave pulses on the rat liver functions were investigated. The action of repetitive nanosecond X-ray is characterized by the metabolic dysfunction of the liver. In particular, it results in a considerable reduction in the ALT activity, augmentation of the AST/ALT ratio and decrease of the total protein content. T...
Article
Full-text available
This paper presents a review of recent studies of superradiant (SR) regime of high-power microwave generation of relativistic backward-wave tubes. The fundamental possibility of producing microwave pulses with peak power substantially exceeding the driving electron beam power was demonstrated in theory and simulation. In experiments, beam-to-microw...
Article
The aim of the note is to describe the bremsstrahlung PPXS, used for studying the action of nanosecond pulses of ionizing and microwave radiations on the biological objects. The incoherent bremsstrahlung is produced by the electron beam of the accelerator (electron energy is 270 keV, beam current - 4 kA) after beam interaction in a target from a st...
Article
Full-text available
We study theoretically and experimentally the possibility of generation of ultrashort powerful microwave pulses. The regime of spatial accumulation of electromagnetic energy is considered in the case where the pulse propagates oppositely to the electron flow in a long slow-wave structure. We show that during transformation of the kinetic energy of...
Article
Full-text available
This article presents results of theoretical and experimental studies on the production of ultrashort (a few RF cycles duration) microwave pulses of gigawatt peak powers based on superradiance from high-current electron beams. With the Cherenkov backward-wave–electron-beam interaction in a low-dispersion slow-wave structure, microwave pulses w...
Article
Full-text available
The results of theoretical and experimental studies allowing the use of Cherenkov superradiance for the generation of electromagnetic pulses with a peak power higher than electron flow power are reported. For an injection current of 2.6 kA and a particle energy of 330 keV, the power of a microwave pulse with a carrier frequency of 9.3 GHz and a dur...
Article
Oscillation of superpower short microwave pulses with the help of a relativistic back-wave tube (BWT) was theoretically and experimentally studied. The conditions were found for an one-dimensional non-steady model when the first burst peak power can exceed electron beam power. That is confirmed experimentally in the wavelength bands 3 cm and 8 mm.
Article
The paper presents theoretical and experimental studies of the Superradiance (SR) regime of short high-power microwave pulse production in the Cherenkov relativistic BWO. It was found in theory and simulations, that under certain conditions, the peak power of the microwave pulse may be higher than the electron beam power. It is possible for enough...
Conference Paper
Full-text available
Effect of X-band HPM pulses from SINUS-500 relativistic HPM source on Drosophila melanogaster embryos, larvae, and pupae was studied. The test objects were irradiated with 10-ns pulses during 5-min batches at pulse rate of 3-29 p.p.s. The peak microwave power was 500 MW, the electric field in the irradiation zone was ~1.5×10<sup>4</sup> V/cm and th...
Article
Full-text available
The paper describes the design and results of the study of a heterodyne meter based on a broadband receiving module that allows one to record the spectrum and carrier frequency variation with time of X-band relativistic generators with a microwave power density of ≤30 kW/cm2 and pulse duration of ≥5 ns in a 500-MHz frequency band and at a 25-dB sig...

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