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Title: Modelling gamma-ray photon emission and pair production in high-intensity laser–matter interactions

In high-intensity (>10{sup 21} Wcm{sup −2}) laser–matter interactions gamma-ray photon emission by the electrons can strongly affect the electron's dynamics and copious numbers of electron–positron pairs can be produced by the emitted photons. We show how these processes can be included in simulations by coupling a Monte Carlo algorithm describing the emission to a particle-in-cell code. The Monte Carlo algorithm includes quantum corrections to the photon emission, which we show must be included if the pair production rate is to be correctly determined. The accuracy, convergence and energy conservation properties of the Monte Carlo algorithm are analysed in simple test problems.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ; ; ;  [5] ;  [1] ;  [2]
  1. Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU (United Kingdom)
  2. (United Kingdom)
  3. Max-Planck-Institut für Kernphysik, Postfach 10 39 80, 69029 Heidelberg (Germany)
  4. Commissariat à l'Energie Atomique, DAM DIF, F-91297 Arpajon (France)
  5. Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry, CV4 7AL (United Kingdom)
Publication Date:
OSTI Identifier:
22230876
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Computational Physics; Journal Volume: 260; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 97 MATHEMATICAL METHODS AND COMPUTING; ACCURACY; ALGORITHMS; ELECTRONS; ENERGY CONSERVATION; GAMMA RADIATION; LASERS; MONTE CARLO METHOD; PAIR PRODUCTION; PHOTON EMISSION; PHOTONS; PLASMA; QUANTUM ELECTRODYNAMICS; SIMULATION