2011/04/04 by Rashid Shaisultanov, Yuri Lyubarsky, David Eichler · 2 citations
Engineering · Physics and Astronomy · #Instability #Laser-Plasma Interactions and Diagnostics #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #Perpendicular #Plasma #Plasma instability #Relativistic beaming #Relativistic particle #Relativistic plasma #Weibel instability #astro-ph.HE #physics.plasm-ph
paper · pdf · doi:10.1088/0004-637x/744/2/182
10 pages, 6 figures
arxiv created 2011/04/04 · openalex publication_date 2011/12/22 · arxiv updated 2015/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The growth rates for Weibel and Buneman instabilities of relativistic ion beams in a relativistically hot electron background are derived analytically for general propagation angles. The Weibel instability perpendicular to the streaming direction is found to be the fastest growing mode and probably the first to appear. Oblique, quasiperpendicular modes grow almost as fast as the growth rate varies only moderately with angle, and they may distort or corrugate the filaments after the perpendicular mode saturates. The growth rate of the purely longitudinal (Buneman) mode is significantly smaller, contrary to the non-relativistic case. The results are consistent with simulations, which display aligned magnetic filaments and their subsequent disruption.