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Title: Turbulence driven by two-stream instability in a magnetized plasma

Abstract

Although the nonlinear evolution of the two-stream instability has been a subject of numerical and theoretical studies for many years, recent spacecraft measurements of nonlinear electrostatic bipolar wave structures in the auroral ionosphere have prompted new studies. Using parallel two-dimensional (2D) particle-in-cell electrostatic simulations with initially counterstreaming cold electrons in a magnetized plasma, the evolution of wave turbulence and particle distributions has been followed for over 10 000 inverse plasma frequencies. Ions are introduced in the frame of one of the electron beams (motivated by measurements). Wave turbulence evolves in at least five separate stages. After tens of {omega}{sub e}{sup -1}, trapping produces bipolar wave structures with long range order across B. After hundreds of {omega}{sub e}{sup -1}, the structures break up and whistlers appear. After thousands of {omega}{sub e}{sup -1}, ion cyclotron waves driven by a bump-on-tail in the evolved electron distribution become prominent. After 6000 {omega}{sub e}{sup -1}, the ion cyclotron waves appear to undergo parametric decay into oblique waves. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1]
  1. Center for Integrated Plasma Studies, University of Colorado, Boulder, Colorado 80309 (United States)
Publication Date:
OSTI Identifier:
20216044
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TWO-STREAM INSTABILITY; TURBULENCE; NONLINEAR PROBLEMS; INVERSE SCATTERING PROBLEM; PLASMA SIMULATION; ONE-DIMENSIONAL CALCULATIONS; PLASMA INSTABILITY; PLASMA WAVES; ELECTROSTATICS; THEORETICAL DATA

Citation Formats

Goldman, Martin V., Crary, Frank, Newman, David L., and Oppenheim, Meers. Turbulence driven by two-stream instability in a magnetized plasma. United States: N. p., 2000. Web. doi:10.1063/1.873992.
Goldman, Martin V., Crary, Frank, Newman, David L., & Oppenheim, Meers. Turbulence driven by two-stream instability in a magnetized plasma. United States. doi:10.1063/1.873992.
Goldman, Martin V., Crary, Frank, Newman, David L., and Oppenheim, Meers. Mon . "Turbulence driven by two-stream instability in a magnetized plasma". United States. doi:10.1063/1.873992.
@article{osti_20216044,
title = {Turbulence driven by two-stream instability in a magnetized plasma},
author = {Goldman, Martin V. and Crary, Frank and Newman, David L. and Oppenheim, Meers},
abstractNote = {Although the nonlinear evolution of the two-stream instability has been a subject of numerical and theoretical studies for many years, recent spacecraft measurements of nonlinear electrostatic bipolar wave structures in the auroral ionosphere have prompted new studies. Using parallel two-dimensional (2D) particle-in-cell electrostatic simulations with initially counterstreaming cold electrons in a magnetized plasma, the evolution of wave turbulence and particle distributions has been followed for over 10 000 inverse plasma frequencies. Ions are introduced in the frame of one of the electron beams (motivated by measurements). Wave turbulence evolves in at least five separate stages. After tens of {omega}{sub e}{sup -1}, trapping produces bipolar wave structures with long range order across B. After hundreds of {omega}{sub e}{sup -1}, the structures break up and whistlers appear. After thousands of {omega}{sub e}{sup -1}, ion cyclotron waves driven by a bump-on-tail in the evolved electron distribution become prominent. After 6000 {omega}{sub e}{sup -1}, the ion cyclotron waves appear to undergo parametric decay into oblique waves. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.873992},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}