Hostname: page-component-745bb68f8f-kw2vx Total loading time: 0 Render date: 2025-01-13T10:49:00.916Z Has data issue: false hasContentIssue false
  • English
  • Français

Low-frequency wave instabilities in a plasma with a quasistatic electric field and weak spatial inhomogeneity

Published online by Cambridge University Press:  12 December 2002

A. N. KRYSHTAL
A. N. KRYSHTAL
Affiliation:
Department of Cosmic Plasma Physics, Main Astronomical Observatory of the National Academy of Sciences of Ukraine, 03680 Golosiiv, Kiev 127, Ukraine
Get access Rights & Permissions [Opens in a new window]

Abstract

A specific type of plasma-wave instability in a hot magnetoactive collisional plasma due to a weak external electric field and weak spatial inhomogeneity is considered for the cases of kinetic Alfvén-like waves. These low-frequency waves with ω [Lt ] Ωi (where Ωi is the ion gyrofrequency) are solutions of the corresponding dispersion relation. The model integral of Bhatnagar, Gross, and Krook is used for the description of collisions. The quasistatic time variation of the electric field amplitude makes it possible to use the ‘direct initiation’ mechanism to describe instability development. An expression for the growth rate is obtained in the framework of linear theory. The instability in question occurs for a certain equation of state of the plasma. For this equation of state, a numerical analysis of the obtained instabilities is performed.

Type
Research Article
Information
Journal of Plasma Physics , Volume 68 , Issue 2 , August 2002 , pp. 137 - 148
Copyright
2002 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)