Particle simulation of an ultrarelativistic two-stream instabilityx
2005 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 94, no 15, 155001- p.Article in journal (Refereed) Published
A two-stream instability in an unmagnetized plasma is examined by a particle-in-cell simulation. Each beam initially consists of cold electrons and protons that stream at a relative Lorentz factor 100. This is representative for plasma close to the external shocks of gamma-ray bursts. An electrostatic wave develops which saturates by trapping electrons. This wave collapses and the resulting electrostatic turbulence gives an electron momentum distribution that resembles a power law with a spectral break. Some electrons reach Lorentz factors over 1000. © 2005 The American Physical Society.
Place, publisher, year, edition, pages
2005. Vol. 94, no 15, 155001- p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-45465DOI: 10.1103/PhysRevLett.94.155001OAI: oai:DiVA.org:liu-45465DiVA: diva2:266361