EMMI Workshop on
Plasma Physics with Intense Ion and Laser Beams
at GSI Darmstadt -
Information

Title:	Dr.
Family Name:	Karmakar
First Name:	Anupam
Gender:	male
E-Mail:	a.karmakarfz-juelich.de
Affiliation for Badge:	FZJ, Jülich
Institute:	Institute for Advanced Simulation
Address (Street):	Juelich Supercomputing Centre
Postal Code, City:	D-52425, Jülich
Country:	Germany
Phone:	+49 2461 61 3523
Fax:
Arrival Date:	November 21
Departure Date:	November 22
Get together on Nov. 20'th:	No
Nov. 21'th:	Yes
Nov. 22'th:	Yes
Hotel Information:	NONE
Author(s):	Anupam Karmakar, N. Kumar, G. Shvets, O. Polomarov, A. Pukhov
Institute(s):	IAS-1, Jülich Supercomputing Centre, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; Institut für Theoretische Physik I, Heinrich-Heine-Universität, Düsseldorf, 40225, Germany; Institute for Fusion Studies, University of Texas at Austin, 1 University Station, Austin, TX 78712, USA
Title:	Weibel instability of a relativistic electron beam in a quasi-neutral plasma
Abstract:	A new model describing the Weibel instability of a relativistic electron beam propagating through a resistive plasma is developed. For finite-temperature beams, a new class of negative energy magneto-sound waves is identified, whose growth due to collisional dissipation destabilizes the beam-plasma system even for high beam temperatures. We perform 2D and 3D particle-in-cell (PIC) simulations to study the filamentary structures and associated electromagnetic fields and show that in 3D geometry, the Weibel instability persists even for collisionless background plasma. The anomalous plasma resistivity in 3D is caused by the two-stream instability.

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