EPJ Web of Conferences
Volume 105, 2015SuGAR 2015 – Searching for the Sources of Galactic Cosmic Rays
|Number of page(s)||4|
|Section||Modeling: Particle Acceleration and Propagation|
|Published online||08 December 2015|
Kinetic effects in the transverse filamentation instability of pair plasmas
1 Gran Sasso Science Institute-INFN, viale Francesco Crispi 7, L'Aquila 67100, Italy
2 Dipartimento di Fisica Enrico Fermi, Università di Pisa, Largo Bruno Pontecorvo 3, Pisa 56127, Italy
3 Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche (CNR/INO), u.o.s. Adriano Gozzini, Pisa, Italy
Published online: 8 December 2015
The evolution of the filamentation instability produced by two counter-streaming pair plasmas is studied with particle-in-cell (PIC) simulations in both one (1D) and two (2D) spatial dimensions. Radiation friction effects on particles are taken into account. During the nonlinear stage of the instability, a strong broadening of the particle energy spectrum occurs accompanied by the formation of a peak at twice their initial energy. A simple theory of the peak formation is presented. The presence of radiative losses does not change the dynamics of the instability but affects the structure of the particle spectra.
© Owned by the authors, published by EDP Sciences, 2015
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