This article is cited in 3 papers

PLASMA, HYDRO- AND GAS DYNAMICS

Broadband instability of the whistler band in a magnetized plasma density depletion with a parallel current

I. Yu. Zudin, M. E. Gushchin, N. A. Aidakina, S. V. Korobkov, A. V. Strikovskiy

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

Abstract: Broadband electromagnetic instability has been detected in a current-carrying depletion of the density of a magnetized laboratory plasma formed by an electrode with a high positive potential. Intense noise with a continuous frequency spectrum is excited in the whistler band below the electron gyrofrequency. This instability is current-driven because noise exists only when an electric current flows in the plasma; noise disappears when the current is interrupted. Broadband signals observed in the laboratory are close in some properties to electromagnetic noise detected in natural density depletions of the high-latitude ionosphere and magnetosphere of the Earth.

Received: 10.11.2020
Revised: 09.12.2020
Accepted: 10.12.2020

DOI: 10.31857/S123456782102004X

 English version: Journal of Experimental and Theoretical Physics Letters, 2021, 113:2, 86–91

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