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Title: Particle acceleration in electron-ion jets

Abstract

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.

Authors:
;  [1];  [2];  [3];  [4];  [5];  [6];  [7]; ;  [8]
  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. (United States)
  7. LUTH, Observatore de Paris-Meudon, 5 place Jules Jansen 92195 Meudon Cedex (France)
  8. NASA-Marshall Space Flight Center, National Space Science and Technology Center, Huntsville, AL 35805 (United States)
Publication Date:
OSTI Identifier:
20719689
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 801; Journal Issue: 1; Conference: Conference on astrophysical sources of high energy particles and radiation, Torun (Poland), 20-24 Jun 2005; Other Information: DOI: 10.1063/1.2141908; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; ELECTRIC FIELDS; ELECTRONS; IONS; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PLASMA; PLASMA INSTABILITY; PLASMA JETS; PLASMA SIMULATION; POSITRONS; POYNTING THEOREM; RELATIVISTIC RANGE

Citation Formats

Nishikawa, K.-I., Mizuno, Y., Hardee, P., Hededal, C. B., Richardson, G., Preece, R., National Space Science and Technology Center, Huntsville, AL 35805, Sol, H., Fishman, G.J., and Kouvelioutou, C.. Particle acceleration in electron-ion jets. United States: N. p., 2005. Web. doi:10.1063/1.2141908.
Nishikawa, K.-I., Mizuno, Y., Hardee, P., Hededal, C. B., Richardson, G., Preece, R., National Space Science and Technology Center, Huntsville, AL 35805, Sol, H., Fishman, G.J., & Kouvelioutou, C.. Particle acceleration in electron-ion jets. United States. doi:10.1063/1.2141908.
Nishikawa, K.-I., Mizuno, Y., Hardee, P., Hededal, C. B., Richardson, G., Preece, R., National Space Science and Technology Center, Huntsville, AL 35805, Sol, H., Fishman, G.J., and Kouvelioutou, C.. Tue . "Particle acceleration in electron-ion jets". United States. doi:10.1063/1.2141908.
@article{osti_20719689,
title = {Particle acceleration in electron-ion jets},
author = {Nishikawa, K.-I. and Mizuno, Y. and Hardee, P. and Hededal, C. B. and Richardson, G. and Preece, R. and National Space Science and Technology Center, Huntsville, AL 35805 and Sol, H. and Fishman, G.J. and Kouvelioutou, C.},
abstractNote = {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.},
doi = {10.1063/1.2141908},
journal = {AIP Conference Proceedings},
number = 1,
volume = 801,
place = {United States},
year = {Tue Nov 22 00:00:00 EST 2005},
month = {Tue Nov 22 00:00:00 EST 2005}
}