Particle acceleration in electron-ion jets

Journal Article · Tue Nov 22 04:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2141908· OSTI ID:20719689

Nishikawa, K -I; Mizuno, Y ^[1]; Hardee, P ^[2]; Hededal, C B ^[3]; Richardson, G ^[4]; Preece, R ^[5]; Sol, H ^[6]; Fishman, G J; Kouvelioutou, C ^[7]

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1. National Space Science and Technology Center, Huntsville, AL 35805 (United States)
2. Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL 35487 (United States)
3. Niels Bohr Institute, Department of Astrophysics, Juliane Maries Vej 30, 2100 Koebenhavn O (Denmark)
4. Department of Mechanical and Aerospace Engineering University of Alabama in Huntsville, Huntsville, AL 35899 (United States)
5. Department of Physics, University of Alabama in Huntsville, Huntsville, AL 35899 (United States)
6. LUTH, Observatore de Paris-Meudon, 5 place Jules Jansen 92195 Meudon Cedex (France)
7. NASA-Marshall Space Flight Center, National Space Science and Technology Center, Huntsville, AL 35805 (United States)

Weibel instability created in collisionless shocks is responsible for particle (electron, positron, and ion) acceleration. Using a 3-D relativistic electromagnetic particle (REMP) code, we have investigated particle acceleration associated with a relativistic electron-ion jet fronts propagating into an ambient plasma without initial magnetic fields with a longer simulation system in order to investigate nonlinear stage of the Weibel instability and its acceleration mechanism. The current channels generated by the Weibel instability induce the radial electric fields. The z component of the Poynting vector (E x B) become positive in the large region along the jet propagation direction. This leads to the acceleration of jet electrons along the jet. In particular the E x B drift with the large scale current channel generated by the ion Weibel instability accelerate electrons effectively in both parallel and perpendicular directions.

• OSTI ID: 20719689
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 801; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ELECTRIC FIELDS
ELECTRONS
IONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA
PLASMA INSTABILITY
PLASMA JETS
PLASMA SIMULATION
POSITRONS
POYNTING THEOREM
RELATIVISTIC RANGE