https://doi.org/10.1140/epjd/e2009-00102-1
Interplay of collisions and temperature on the filamentary structures of a relativistic electron beam in plasmas
1
Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
2
Institute for Advanced Simulation, Jülich Supercomputing Centre, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
3
Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
4
Department of Physics and Institute for Fusion Studies, University of Texas at Austin, One University Station, Austin, TX, 78712, USA
Corresponding author: a pukhov@tp1.uni-duesseldorf.de
Received:
17
November
2008
Revised:
24
February
2009
Published online:
3
April
2009
A systematic study on the Weibel instability induced filamentation of a relativistic electron beam is made by including the effects of collisions and temperature. The stabilization and de-stabilization of the beam filamentation due to beam temperature and plasma collisions, respectively, is explored through an analytical model and PIC simulations. The de-stabilization of the beam filamentation is attributed to the collision driven negative energy wave generation in the beam plasma system.
PACS: 52.57.-z – Laser inertial confinement / 52.35.-g – Waves, oscillations, and instabilities in plasmas and intense beams / 52.65.Rr – Particle-in-cell method
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
