Generation of Rogue Waves in Gyrotrons Operating in the Regime of Developed Turbulence

Generation of Rogue Waves in Gyrotrons Operating in the Regime of Developed Turbulence Within the framework of the average approach and direct 3D PIC (particle-in-cell) simulations, we demonstrate that the gyrotrons operating in the regime of developed turbulence can sporadically emit “giant” spikes with intensities a factor of 100–150 greater than the average radiation power and a factor of 6–9 exceeding the power of the driving electron beams. Together with the statistical features such as a long-tail probability distribution, this allows the interpretation of generated spikes as microwave rogue waves. The mechanism of spikes formation is related to the simultaneous cyclotron interaction of a gyrating electron beam with forward and backward waves near the waveguide cutoff frequency as well as with the longitudinal deceleration of electrons. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

Generation of Rogue Waves in Gyrotrons Operating in the Regime of Developed Turbulence

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Generation of Rogue Waves in Gyrotrons Operating in the Regime of Developed Turbulence

Abstract

Within the framework of the average approach and direct 3D PIC (particle-in-cell) simulations, we demonstrate that the gyrotrons operating in the regime of developed turbulence can sporadically emit “giant” spikes with intensities a factor of 100–150 greater than the average radiation power and a factor of 6–9 exceeding the power of the driving electron beams. Together with the statistical features such as a long-tail probability distribution, this allows the interpretation of generated spikes as microwave rogue waves. The mechanism of spikes formation is related to the simultaneous cyclotron interaction of a gyrating electron beam with forward and backward waves near the waveguide cutoff frequency as well as with the longitudinal deceleration of electrons.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
0031-9007
eISSN
1079-7114
D.O.I.
10.1103/PhysRevLett.119.034801
Publisher site
See Article on Publisher Site

Abstract

Within the framework of the average approach and direct 3D PIC (particle-in-cell) simulations, we demonstrate that the gyrotrons operating in the regime of developed turbulence can sporadically emit “giant” spikes with intensities a factor of 100–150 greater than the average radiation power and a factor of 6–9 exceeding the power of the driving electron beams. Together with the statistical features such as a long-tail probability distribution, this allows the interpretation of generated spikes as microwave rogue waves. The mechanism of spikes formation is related to the simultaneous cyclotron interaction of a gyrating electron beam with forward and backward waves near the waveguide cutoff frequency as well as with the longitudinal deceleration of electrons.

Journal

Physical Review LettersAmerican Physical Society (APS)

Published: Jul 21, 2017

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