, Volume 55, Issue 2, pp 415-420
Date: 03 Apr 2009

Interplay of collisions and temperature on the filamentary structures of a relativistic electron beam in plasmas

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Abstract

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.