Applied physics
No. 2, 2002

Nonlinear behavior of plasma in relativistic PCM

I.L. Bogdankevich, A.A. Rukhadze

General Physics Institute of RAS, Moscow, Russia

V.P. Tarakanov


ITES RAS, Moscow, Russia

   With use of a code "KARAT" was carried out modeling work of the plasma relativistic cherenkov microwave oscillator on a cable wave. Is shown, that at small density of plasma, near to a threshold of occurrence of a cherenkov resonance, nonlinear movement of beam's electrons essentially influences on work of the oscillator. In sistem, the rather low-frequency, cable wave, fascinating of a beam's electrons, is raised practically monochromatic. The movement of plasma's electrons appears regular. On the contrary, at the large plasma density, close to extreme admitted on condition of magnitized plasma, movements of electrons, both beam and plasma, appear substantial nonlinear and chaotic. Apparently, a consequence of this circumstance is the broadband generation of microwaves in the field of high frequencies.

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