Numerical modeling of plasma oscillations with consideration of electron thermal motion

Authors

DOI:

https://doi.org/10.26089/NumMet.v19r218

Keywords:

numerical simulation, finite-difference method, plasma oscillations, traveling waves, perturbation method

Abstract

The effect of electron thermal motion on plane nonrelativistic nonlinear plasma oscillations is studied. It is shown numerically and analytically that when the thermal motion is taken into account, the oscillations are transformed to a traveling wave. At the same time, the wave amplitude grows with increasing temperature, which promotes the removal of energy from the initial region of oscillation localization. A finite-difference scheme is proposed for the numerical simulation on the basis of Eulerian variables. When using the Lagrangian variables to approximate small perturbations, the distributions of electron density maxima are obtained depending on the plasma temperature. The obtained analytical results are in good agreement with numerical experiments.

Author Biographies

A.A. Frolov

Joint Institute for High Temperatures of RAS (JIHT RAS)
• Senior Researcher

E.V. Chizhonkov

Lomonosov Moscow State University
• Professor

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Published

15-05-2018

How to Cite

Фролов А., Чижонков Е. Numerical Modeling of Plasma Oscillations With Consideration of Electron Thermal Motion // Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie). 2018. 19. 194-206. doi 10.26089/NumMet.v19r218

Issue

Vol. 19 (2018): Issue 2.

Section

Section 1. Numerical methods and applications

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