Numerical Simulations of an Expanding Magnetized Electron-Positron Plasmas

Details Numerical Simulations of an Expanding Magnetized Electron-Positron Plasmas Numerical Simulations of an Expanding Magnetized Electron-Positron Plasmas

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dppro2009l&link_type=abstract

American Physical Society, 44th Annual Meeting of the Division of Plasma , abstract #RO2.009

Astronomy and Astrophysics

Astrophysics

Scientific paper

Magnetized electron-positron plasmas are ubiquitous in astrophysics, ranging from pulsar winds, blazar jets to gamma-ray bursts. Recent ultra-intense laser experiments suggest that such plasmas may also be created in the laboratory. Here we report on multi-dimensional Particle-in-Cell simulations of the expansion dynamics and collisionless kinetics of such plasmas. In particular we will highlight the differences between the behaviors of electron-positron and electron-ion plasmas. We find that, in the electron-positron case, the decaying magnetic energy can be efficiently converted into the kinetic energy of a small number of relativistic particles. This has important implications for particle acceleration in astrophysics.

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