We present three-dimensional, fully relativistic, fluid simulations of the dynamics of inhomogeneous counter streaming beams with the aim of understanding the magnetic structures that can be expected to form as a consequence of the development of the so-called Weibel instability. Ringlike structures in the transverse direction are generated as a consequence of the development of a spatially resonant mode. We describe the structures generated by beams of equal initial density and velocity and by a fast, less dense beam compensated by a slower, denser beam. We consider these two cases as schematic models of a laser produced beam propagating in a plasma with nearly equal density and in a plasma much denser than the injected beam.
|Autori interni:||CALIFANO, FRANCESCO|
|Autori:||Califano F; Del Sarto D; Pegoraro F|
|Titolo:||Three-dimensional magnetic structures generated by the development of the filamentation (Weibel) instability in the relativistic regime|
|Anno del prodotto:||2006|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.96.105008|
|Appare nelle tipologie:||1.1 Articolo in rivista|