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

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Ridgers, C. P., Kirk, J. G., Duclous, R., Blackburn, T. G., Brady, Christopher S., Bennett, Keith, Arber, T. D. and Bell, A. R. (2014) Modelling gamma-ray photon emission and pair production in high-intensity laser–matter interactions. Journal of Computational Physics, 260 . pp. 273-285. doi:10.1016/j.jcp.2013.12.007

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Official URL: http://dx.doi.org/10.1016/j.jcp.2013.12.007

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Abstract

In high-intensity ( > 10 21 Wcm − 2 ) laser–matter interactions gamma-ray photon emission by the electrons can strongly affect the electronʼs 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 problem.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Photon emission -- Simulation methods, Monte Carlo method, Algorithms
Journal or Publication Title: Journal of Computational Physics
Publisher: Academic Press Inc. Elsevier Science
ISSN: 1090-2716
Official Date: 1 March 2014
Dates:
DateEvent
1 March 2014Published
16 December 2013Available
19 November 2013Accepted
Volume: 260
Page Range: pp. 273-285
DOI: 10.1016/j.jcp.2013.12.007
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/G055165/1 [EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/G054940/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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