Competition between Buneman and Langmuir Instabilities
- 1 March 2012
- journal article
- Published by IOP Publishing in Chinese Physics Letters
- Vol. 29 (3), 035203
- https://doi.org/10.1088/0256-307x/29/3/035203
Abstract
The electron-ion beam instabilities are studied by one-dimensional electrostatic particle-in-cell simulation. The simulation results show that both the low-frequency Buneman mode and high-frequency Langmuir wave (LW) are excited in the nonlinear phase. The power of Buneman instability is stronger than that of the LW. The Buneman instability is firstly excited. Then the backward LW appears, which is probably excited by the particles trapped in the wave potential and moving opposite to the original beam direction. After some time, the forward LW can be found, which has a larger maximum frequency than that of the backward LW. With the decrease of the electron drift velocity, the instabilities become weaker; the LW appears to have almost equal intensities and becomes symmetric for forward and backward propagation directions. The LW can also heat the electron, so the relative drift speed cannot far exceed the electron thermal speed, which is not helpful to the development of Buneman instability.Keywords
This publication has 16 references indexed in Scilit:
- Modeling nonlinear development of Buneman instability with linear dispersion theoryPlasma Physics and Controlled Fusion, 2011
- Nonlinear turbulence theory and simulation of Buneman instabilityPhysics of Plasmas, 2010
- Nonlinear evolution of Buneman instability and its implication for electron acceleration in high Mach number collisionless perpendicular shocksPhysics of Plasmas, 2009
- Anomalous resistivity and the nonlinear evolution of the ion‐acoustic instabilityJournal of Geophysical Research, 2006
- Effective collision frequency due to ion‐acoustic instability: Theory and simulationsGeophysical Research Letters, 2004
- Anomalous resistivity in non‐Maxwellian plasmasJournal of Geophysical Research, 2003
- Ion‐acoustic resistivity in plasmas with similar ion and electron temperaturesGeophysical Research Letters, 2002
- Large-scale numerical simulations of ion beam instabilities in unmagnetized astrophysical plasmasPhysics of Plasmas, 2000
- Dissipation of Currents in Ionized MediaPhysical Review B, 1959
- Instability, Turbulence, and Conductivity in Current-Carrying PlasmaPhysical Review Letters, 1958