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Yalandin, M. I.; Shpak, V. G.

doi:10.1023/a:1017535304915

Cited by 85 publications

(30 citation statements)

References 5 publications

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“…7b). This result was experimentally confirmed using a RADAN-303BP accelerator [16]. Figure 7c shows a typical oscillogram of the SR pulse.…”

Section: Experiments On Generation Of Superradiance Pulses With Peak supporting

confidence: 60%

“…However, under actual conditions, the density of particles should be sufficiently high because of their motion in order that the growth rates would permit one to observe the development of these processes on the scales of laboratory devices. In this respect, short kiloampere electron beams obtained from explosive-emission cathodes and having particle energies 200-350 keV and durations 0.2-1 ns and 4-10 ns for the millimeter-and centimeterwave ranges, respectively, turn out to be fairly suitable for the laboratory observations of SR. Accelerators capable of generating such beams were developed at the Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences (Tomsk, Russia) and the Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences (Ekaterinburg, Russia) [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

Zotova

Pegel

Rostov

et al. 2007

Radiophys Quantum El

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One of the promising methods for generation of ultrashort electromagnetic pulses (with duration of about ten periods of high-frequency oscillations) is radiation from spatially localized electron ensembles (bunches), which can be considered a classical analog of Dicke superradiance known in quantum electronics. In classical electronics, superradiance can be related to various mechanisms of stimulated radiation. Until now, cyclotron, undulator, andČerenkov (in the case of interaction with both copropagating and counterpropagating waves) superradiance of electron bunches as well as superradiance during stimulated scattering of a pump wave have been studied theoretically and experimentally. As a result of these studies based on high-current RADAN and SINUS accelerators and their modifications, a new class of oscillators producing pulsed electromagnetic radiation has been created. They have such unique characteristics as pulses of high peak power (up to 1 GW and 3 GW in the millimeter-and centimeter-wave ranges, respectively) and ultrashort duration (from 300 ps to 1 ns, respectively). In this case, regimes with a peak radiation power exceeding the electron-beam power are experimentally realized. Regimes with high (kilohertz) pulse repetition rate and high average power (up to 2.5 kW) are obtained.

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“…7b). This result was experimentally confirmed using a RADAN-303BP accelerator [16]. Figure 7c shows a typical oscillogram of the SR pulse.…”

Section: Experiments On Generation Of Superradiance Pulses With Peak supporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

Zotova

Pegel

Rostov

et al. 2007

Radiophys Quantum El

Self Cite

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“…The interelectrode voltage was supplied from an oscillator of the RADAN-220 type, which generated voltage pulses with an amplitude of ~230 kV (in the open-circuit regime), a FWHM of ~2 ns (on a matched load), and a leading front width of ~0.5 ns [11]. It was possible to change the polarity of generated voltage pulses applied to the potential electrode.…”

Section: Setup and Methods Of Experimentsmentioning

confidence: 99%

“…It should be noted that, while the conditions of UAEB-induced volume discharge formation admit broad variation of the voltage pulse duration and amplitude and the cathode design [6,[8][9][10][11][12][13][14], the generation of a runaway electron beam requires the optimization of a number of parameters [9]. The present study was not aimed at studying the surface modification of copper under the conditions of runaway electron beam formation with maximum amplitude.…”

Section: Setup and Methods Of Experimentsmentioning

confidence: 99%

Modification of the near-surface layers of a copper foil under the action of a volume gas discharge in air at atmospheric pressure

et al. 2008

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-We have studied the modification of the near-surface layers of a copper foil under the action of a volume gas discharge, which was generated in air at atmospheric pressure by nanosecond highvoltage pulses of both negative and positive polarity applied between the foil and an electrode with a small radius of curvature. It is established that the surface layer of the discharge-treated copper foil in the central region is cleaned from carbon contaminations, while oxygen atoms penetrate in depth of the foil. The depth of a cleaned layer depends on the polarity of voltage pulses. For the positive voltage polarity on the foil, the cleaning takes place up to a depth exceeding 50 nm, while oxygen penetrates up to a depth of about 25 nm.

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“…The experiments were carried out using a new subnanosecond pulser SAEB-150 (pulser no.1) and two nanosecond pulsers RADAN-220 [22] (pulsers no. 2 and no.…”

Section: The Experimental Set-ups and Techniquesmentioning

confidence: 99%

Supershort avalanche electron beams and x-ray in high-pressure nanosecond discharges

Тарасенко

Бакшт

Kostyrya

et al. 2008

J. Phys.: Conf. Ser.

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Cited by 85 publications

References 5 publications

Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

Modification of the near-surface layers of a copper foil under the action of a volume gas discharge in air at atmospheric pressure

Supershort avalanche electron beams and x-ray in high-pressure nanosecond discharges

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