Streaming instabilities in converging geometry

descriptionPublicationkeyboard_double_arrow_right Article , Part of book or chapter of book , Conference object 24 Apr 2019Publisher:SPIEJournal:Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources IIIFunded by:EC | LASERLAB-EUROPE

Authors: Inigo Gamiz, Lucas I.; Ersfeld, Bernhard; Yoffe, Samuel R.; Cairns, R. Alan; Jaroszynski, Dino A.;

doi: 10.1117/12.2524105

Streaming instabilities in converging geometry

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Abstract

We present an investigation into counter-streaming electron beams converging towards, and diverging from, a single point in two dimensions, leading to two-stream and current filamentation instabilities, which have radial and azimuthal density modulations, respectively. Using a semi-analytical approach and numerical simulations, we find no evidence for the two-stream instability in this geometry, but show that the system is unstable to the development of current filamentation.

Related Organizations

University of Strathclyde
United Kingdom
University of St Andrews
United Kingdom

Keywords

Physics, 530, QC

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