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

被引：47
|
作者：
Ginzburg, N. S. [1 ]
Rozental, R. M. [1 ]
Sergeev, A. S. [1 ]
Fedotov, A. E. [1 ]
Zotova, I. V. [1 ]
Tarakanov, V. P. [2 ]
机构：
[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia
[2] Moscow Engn Phys Inst, Moscow 115409, Russia
来源：
PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
LASER;
D O I：
10.1103/PhysRevLett.119.034801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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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页数：5
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