Interplay of collisions and temperature on the filamentary structures of a relativistic electron beam in plasmas
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- Kumar, N., Karmakar, A., Pukhov, A. et al. Eur. Phys. J. D (2009) 55: 415. doi:10.1140/epjd/e2009-00102-1
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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.