1D3V PIC simulation of propagation of relativistic electron beam in an inhomogeneous plasma. (24th July 2015)

• Record Type: Journal Article
• Authors: Shukla, Chandrasekhar; Das, Amita; Patel, Kartik
• Is Part Of: Physica scripta. Volume 90:Number 8(2015:Aug.)
• Publication Date: 2015-07-24
• Subjects: plasma instabilities -- PIC simulation -- Weibel instability; Physics -- Periodicals; 530.05
• DOI: 10.1088/0031-8949/90/8/085605
• Languages: English
• ISSNs: 0031-8949

Abstract

Abstract: In the present work full particle-in-cell (PIC) simulations have been carried out for the propagation of relativistic electron beams (REBs) through an inhomogeneous background plasma. The suppression of the filamentation instability, responsible for beam divergence, is shown. The simulation also confirms that in the nonlinear regime too the REB propagation is better when it propagates through a plasma whose density is inhomogeneous transverse to the beam. The role of inhomogeneity scale length, its amplitude and the transverse beam temperature etc, in the suppression of the instability is studied in detail.