Dispersion Characteristics of Low-Frequency Electron Waves in a Magnetoactive Plasma of Arbitrary Density

N. S. Artekha; Артеха Н. С.; D. R. Shklyar; Шкляр Д. Р.

doi:10.31857/S0367292123600838

Dispersion Characteristics of Low-Frequency Electron Waves in a Magnetoactive Plasma of Arbitrary Density

Authors: Artekha N.S.¹^,2, Shklyar D.R.¹
Affiliations:
1. Space Research Institute, Russian Academy of Sciences
2. National Research University Higher School of Economics
Issue: Vol 49, No 11 (2023)
Pages: 1127-1139
Section: КОЛЕБАНИЯ И ВОЛНЫ В ПЛАЗМЕ
URL: https://journals.rcsi.science/0367-2921/article/view/233136
DOI: https://doi.org/10.31857/S0367292123600838
EDN: https://elibrary.ru/HIZYRY
ID: 233136

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Abstract
About the authors
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Abstract

The article studies waves in a collisionless magnetoactive plasma with frequencies much lower than the electron cyclotron frequency at an arbitrary ratio between the electron plasma and cyclotron frequencies. A general dispersion relation is obtained for the wave frequency as a function of the wave vector and the ratio of the plasma frequency to the cyclotron frequency. This relation is a bicubic equation with respect to frequency. Based on this equation, the existence domains of various wave modes depending on the specified parameter, their group velocity, polarization, and energy density are studied. Special attention is paid to low-frequency whistler waves in a low-density plasma, since, among the propagating wave modes existing in the specified range of parameters, whistler waves have the highest refractive index and play an important role in theresonant interaction of waves and particles.

Keywords

low-density plasma, low-frequency waves, dispersion relations, polarization of wave modes, whistler wave energy density, Gendrin angle

About the authors

N. S. Artekha

Space Research Institute, Russian Academy of Sciences; National Research University Higher School of Economics

Email: natalya.arteha@mail.ru
117997, Moscow, Russia; 101000, Moscow, Russia

D. R. Shklyar

Space Research Institute, Russian Academy of Sciences

Author for correspondence.
Email: david@iki.rssi.ru
117997, Moscow, Russia

References

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