| Numéro |
J. Phys. IV France
Volume 133, June 2006
|
|
|---|---|---|
| Page(s) | 417 - 420 | |
| DOI | https://doi.org/10.1051/jp4:2006133084 | |
| Publié en ligne | 16 juin 2006 | |
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 417-420
DOI: 10.1051/jp4:2006133084
1 Institute of Laser Engineering, Osaka Univ. 2-6 Yamadaoka Suita, Osaka 565-0871, Japan
2 Setsunan University, Neyagawa, Osaka 572-8508, Japan
© EDP Sciences 2006
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 417-420
DOI: 10.1051/jp4:2006133084
Scale dependence of Weibel instability of relativistic electron beam in high-dense plasma
T. Matsumoto1, T. Taguchi2, 0 and K. Mima21 Institute of Laser Engineering, Osaka Univ. 2-6 Yamadaoka Suita, Osaka 565-0871, Japan
2 Setsunan University, Neyagawa, Osaka 572-8508, Japan
Abstract
Nonlinear dynamics of relativistic electron current in
dense plasmas has been investigated by using two-dimensional Fluid-Particle
Hybrid code (FPH code). FPH simulations show that relativistic electron
filaments are generated by the Welbel instability and merge each other to be
self-organized. When the relativistic electron beam diameter is large and
the total current is over 100 times Alfven limit current, many filaments are
confined in the initial beam area. It is found that the number of
relativistic electron filament decreases in proportion to
t - 0.9 in the
fixed ion case. This asymptotic behavior is explained by the random motion
of filaments driven by fluctuating magnetic fields.
© EDP Sciences 2006