This article is cited in 2 papers

PLASMA, HYDRO- AND GAS DYNAMICS

Features of turbulence excited by pulsed high-frequency pump in a magnetoplasma

I. Yu. Zudin, M. E. Gushchin, A. V. Strikovskiy, S. V. Korobkov, I. A. Petrova, A. N. Katkov, V. V. Kochedykov

Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia

Abstract: Turbulence developed in a magnetoplasma modified by a high-power high-frequency pulse fed to a loop antenna is discovered and studied on the large-scale KROT plasma device. Turbulence is manifested in the excitation of the electron density and magnetic field pulsations, deep self-modulation of the pump wave, and modulation of probe waves passing through the modified plasma region. The space–time characteristics of turbulence are determined using correlated plasma density measurements by a pair of miniature microwave resonator probes and a magnetic probe. It is established that turbulence is excited only in the transparency band of the dense magnetoplasma to electromagnetic radiation: turbulent perturbations of the density and magnetic field exist during pumping at frequencies lower than the electron cyclotron frequency and are absent at pumping frequencies exceeding the electron cyclotron frequency.

Received: 31.03.2022
Revised: 22.05.2022
Accepted: 24.05.2022

DOI: 10.31857/S1234567822130079

 English version: Journal of Experimental and Theoretical Physics Letters, 2022, 116:1, 41–47