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Physics of Plasmas : Stability of three-dimensional electron holes

By M. Berthomier, G. Dubois, and L. Muschietti

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Book Id: WPLBN0002169651
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 12 November 2008

Title: Physics of Plasmas : Stability of three-dimensional electron holes  
Author: M. Berthomier, G. Dubois, and L. Muschietti
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Physics of Plasmas Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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G. Dubois, And L. Muschiett, M. B. (n.d.). Physics of Plasmas : Stability of three-dimensional electron holes. Retrieved from http://community.worldlibrary.org/


Description
Description: A self-consistent kinetic model of three-dimensional (3D) electron holes in a strongly magnetized collisionless plasma is presented. A stability study of these localized electrostatic structures has been carried out. The analysis of the motion of trapped particles in the 3D potential structure suggests using the Hamiltonian approach to describe how electron holes interact with an external electrostatic perturbation. Using 3D action-angle variables and perturbation theory, it is shown that, in addition to standard Landau resonance of passing (i.e., untrapped) particles, trapped particles resonate with the perturbation in such a way that they amplify it. A growth rate for this process is derived and application to magnetospheric plasma conditions shows that the stability of 3D electron holes is strongly dependent on the anisotropy of the underlying potential structure. Possible production of electrostatic whistler waves by a train of electron holes in the auroral region of the Earth’s magnetosphere is emphasized.

 

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