Effects of filamentation instability on the divergence of relativistic electrons driven by ultraintense laser pulses

X. H. Yang, H. B. Zhuo, H. Xu, Z. Y. Ge, F. Q. Shao, M. Borghesi, Y. Y. Ma

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7 Citations (Scopus)
278 Downloads (Pure)

Abstract

Generation of relativistic electron (RE) beams during ultraintense laser pulse interaction with plasma targets is studied by collisional particle-in-cell simulations. A strong magnetic field with a transverse scale length of several local plasma skin depths, associated with RE current propagation in the target, is generated by filamentation instability in collisional plasmas, inducing a great enhancement of the divergence of REs compared to that of collisionless cases. Such an effect is increased with laser intensity and target charge state, suggesting that the RE divergence might be improved by using low-Z materials under appropriate laser intensities in future fast ignition experiments and in other applications of laser-driven electron beams.

Original languageEnglish
Article number103110
Number of pages8
JournalPhysics of Plasmas
Volume23
Issue number10
Early online date27 Oct 2016
DOIs
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Condensed Matter Physics

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