Experimental observation of superradiance in the stimulated scattering of an intense microwave pump wave by a counterpropagating subnanosecond high-current relativistic electron bunch

Reutova, A. G.; Ul’maskulov, M. R.; Sharypov, A. K.; Shpak, V. G.; Shunaĭlov, S. A.; Yalandin, M. I.; Belousov, V. I.; Денисов, Г. Г.; Zotova, I. V.; Rozental, R. M.; Sergeev, A. S.

doi:10.1134/1.2130909

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…The duration of the obtained SR pulse did not exceed 200 ps. The integral (over the spectrum) power in the radiation peak was about 1 MW [33].…”

Section: Generation Of Superradiance Pulses During Stimulated Forth Smentioning

confidence: 98%

“…To generate ultrashort pulses in the high-frequency ranges, the SR mechanism realized during stimulated scattering of a high-power electromagnetic pump wave by a moving electron bunch seems attractive [32,33]. Under the condition that a pump wave with frequency ω i propagates opposite to the electron beam, the scattered-radiation frequency ω s should significantly exceed the pump frequency due to the Doppler effect:…”

Section: Generation Of Superradiance Pulses During Stimulated Forth Smentioning

confidence: 99%

“…In this respect, in Sec. 2 we present a brief theoretical analysis of SR effects based on various mechanisms of stimulated radiation, as well as results of the first experimental observations of these effects [20][21][22][23][24][25][26][27][28][29][30][31][32][33]. In those experiments, SR pulses with maximum peak power and uniquely short duration (less than 300 ps) were obtained during theČerenkov interaction of a rectilinearly moving electron bunch with a slow spatial harmonic of the counterpropagating electromagnetic wave in a periodic slow-wave system.…”

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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“…The duration of the obtained SR pulse did not exceed 200 ps. The integral (over the spectrum) power in the radiation peak was about 1 MW [33].…”

Section: Generation Of Superradiance Pulses During Stimulated Forth Smentioning

confidence: 98%

Section: Generation Of Superradiance Pulses During Stimulated Forth Smentioning

confidence: 99%

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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“…11) based on two RADAN accelerators, synchronized with accuracy 100-300 ps [16] is arranged. The first accelerator is used to drive the 37-GHz generator of SR pulses with duration ∼300 ps based on a relativistic BWO.…”

Section: B Experimental Observation Of Amplification and Nonlinear Cmentioning

confidence: 99%

Generation, Amplification, and Nonlinear Self-Compression of Powerful Superradiance Pulses

Zotova

Cross

Phelps

et al. 2013

IEEE Trans. Plasma Sci.

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The Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Abstract-Superradiance (SR) of electron bunches can be considered an effective method of production of ultrashort electromagnetic pulses. Different types of SR associated with different mechanisms (cyclotron, Cherenkov, and bremsstrahlung) of stimulated emission are observed experimentally in the millimeter and centimeter wavelength bands. Progress in this research has enabled a new type of generator to be created capable of generating unique short (under 200-300 ps) electromagnetic pulses at super high peak powers exceeding 1 GW in the millimeter and 3 GW in the centimeter waveband. Some new methods for further increasing of the SR pulse peak power along with the promotion of such sources to higher frequency bands are discussed. These new methods include phase synchronization of several SR pulse generators, the amplification of an SR pulse during its propagation along a quasi-stationary electron beam and nonlinear compression in the process of induced selftransparency.

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“…Several researchers, motivated to develop new microwave sources, have also studied the MU radiation [9,10]. Recently, a group demonstrated stimulated scattering of a 38-GHz pump wave at TE 11 mode from a 300-keV high-current electron beam [11]. However, this work provided no means for ensuring field uniformity along the 20-cm-long interaction period.…”

mentioning

confidence: 99%

Experimental Demonstration of a Tunable Microwave Undulator

et al. 2014

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Static magnetic undulators used by x-ray light sources are fundamentally too limited to achieve shorter undulator periods and dynamic control. To overcome these limitations, we report experimental demonstration of a novel short-period microwave undulator, essentially a Thomson scattering device, that has yielded tunable spontaneous emission and seeded coherent radiation. Its equivalent undulator period (λ u) is 13.9 mm while it has achieved an equivalent magnetic field of 0.65 T. For future-generation light sources, this device promises a shorter undulator period, a large aperture, and fast dynamic control.

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Experimental observation of superradiance in the stimulated scattering of an intense microwave pump wave by a counterpropagating subnanosecond high-current relativistic electron bunch

Cited by 11 publications

References 3 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

Generation, Amplification, and Nonlinear Self-Compression of Powerful Superradiance Pulses

Experimental Demonstration of a Tunable Microwave Undulator

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