Effect of Guiding Magnetic Field on Weibel Instability
LI Ji-Wei1, PEI Wen-Bing2
1Graduate School, China Academy of Engineering Physics, PO Box 2101, Beijing 100088
2Institute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088
Effect of Guiding Magnetic Field on Weibel Instability
LI Ji-Wei1;PEI Wen-Bing2
1Graduate School, China Academy of Engineering Physics, PO Box 2101, Beijing 100088
2Institute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088
Abstract： We derive a linear dispersion relation in the presence of a constant uniform guiding magnetic field parallel to the beam velocity direction, which shows a strong background magnetic field suppresses or even stabilizes the Weibel instability produced by two counter streams in electron-ion plasmas. The simulation results are in good agreement with the analytical ones. Also observed in the simulations are the suppression of electrostatic field, a higher level of saturation of self-generated magnetic field, and the apparent difference in phase space compared with those in the absence of guiding magnetic field.
(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
引用本文:
LI Ji-Wei;PEI Wen-Bing. Effect of Guiding Magnetic Field on Weibel Instability[J]. 中国物理快报, 2005, 22(8): 1976-1979.
LI Ji-Wei, PEI Wen-Bing. Effect of Guiding Magnetic Field on Weibel Instability. Chin. Phys. Lett., 2005, 22(8): 1976-1979.
2005, Vol. 22 
