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The ion streaming effect on Weibel instability in the relativistic dense plasma
Author(s) -
Khodadadi Azadboni F.,
Mahdavi M.
Publication year - 2017
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201700027
Subject(s) - instability , wavenumber , weibel instability , plasma , ion , atomic physics , two stream instability , physics , inertial confinement fusion , electron , materials science , optics , nuclear physics , mechanics , quantum mechanics
The Weibel instability plays an important role in stopping hot electrons and energy deposition mechanism in fast ignition of inertial fusion process. In this paper, the ion Weibel instability in counter propagating electron‐ion plasmas is investigate. The obtained results show that the growth rate of Weibel instability will be decreased about 40% with the anisotropy velocity as v xe = 2 v ze = 20; the ion density ratio, b = n 0 i 1 / n 0 i 2 , and density gradient, are increasing 50 and 90% respectively. The ion streaming in density gradient of dense plasma leads to increasing the Weibel instability growth rate and its amplification through ion streaming in the large wavenumber. The maximum unstable wavenumber has been decreased with decreasing the ion beam density ratio. For fixed ion density ratio, increasing 90% of the density gradient in the near of fuel plasma corona leads to reducing growth rate and unstable wavenumber about 43 and 42% respectively.