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Effects of high energy photon emissions in laser generated ultra-relativistic plasmas: Real-time synchrotron simulations
Umeå University, Faculty of Science and Technology, Department of Physics. Department of Applied Physics, Chalmers University of Technology, SE–412 96 Göteborg, Sweden.
Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden; Nizhny Novgorod, Russia .
Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden.
2015 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 22, no 3, 033117Article in journal (Refereed) Published
Abstract [en]

We model the emission of high energy photons due to relativistic charged particle motion in intense laser-plasma interactions. This is done within a particle-in-cell code, for which high frequency radiation normally cannot be resolved due to finite time steps and grid size. A simple expression for the synchrotron radiation spectra is used together with a Monte-Carlo method for the emittance. We extend previous work by allowing for arbitrary fields, considering the particles to be in instantaneous circular motion due to an effective magnetic field. Furthermore, we implement noise reduction techniques and present validity estimates of the method. Finally, we perform a rigorous comparison to the mechanism of radiation reaction, and find the emitted energy to be in excellent agreement with the losses calculated using radiation reaction. (C) 2015 AIP Publishing LLC.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2015. Vol. 22, no 3, 033117
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-103169DOI: 10.1063/1.4916491ISI: 000352163500081OAI: oai:DiVA.org:umu-103169DiVA: diva2:814593
Available from: 2015-05-27 Created: 2015-05-18 Last updated: 2017-12-04Bibliographically approved

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