Email this article Oscillatory growth behavior of multistream instabilities
- Authors: Hou Y.W.1, Chen M.X.2, Yu M.Y.3,4, Wu B.5
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Affiliations:
- Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology
- School of Electronic Science and Applied Physics
- Institute for Fusion Theory and Simulation, Department of Physics
- Institute for Theoretical Physics I
- Institute of Plasma Physics
- Issue: Vol 42, No 9 (2016)
- Pages: 900-907
- Section: Plasma Instability
- URL: https://journals.rcsi.science/1063-780X/article/view/185954
- DOI: https://doi.org/10.1134/S1063780X1609004X
- ID: 185954
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Abstract
Multistream instabilities in the one-dimensional Vlasov−Poisson system are studied numerically by using plasmas with multi-humped electron distributions. The evolution of the total wave energy of the plasma oscillations excited by (numerical) noise consists of transient, growth, and nonlinear saturation stages. It is found that, in the growth stage, the total wave energy oscillates for odd number of streams, but it does not oscillate for even number of streams. It is also found that different spectral (Fourier) modes can dominate different stages of the “linear” growth and nonlinear saturation stages.
About the authors
Y. W. Hou
Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology
Author for correspondence.
Email: arvay.hou@aliyun.com
China, Hefei, 230031
M. X. Chen
School of Electronic Science and Applied Physics
Email: arvay.hou@aliyun.com
China, Hefei
M. Y. Yu
Institute for Fusion Theory and Simulation, Department of Physics; Institute for Theoretical Physics I
Email: arvay.hou@aliyun.com
China, Hangzhou, 310058; Bochum, 44780
B. Wu
Institute of Plasma Physics
Email: arvay.hou@aliyun.com
China, Anhui, 230031
