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Dense electron-positron plasmas and ultraintense γ rays from laser-irradiated solids

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Ridgers, C., Brady, Christopher S., Duclous, R., Kirk, J., Bennett, K., Arber, T. D., Robinson, A. and Bell, A. (2012) Dense electron-positron plasmas and ultraintense γ rays from laser-irradiated solids. Physical Review Letters, Vol.108 (No.16). p. 165006. doi:10.1103/PhysRevLett.108.165006

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.108.165006

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Abstract

In simulations of a 10PW laser striking a solid, we demonstrate the possibility of producing a pure electron-positron plasma by the same processes as those thought to operate in high-energy astrophysical environments. A maximum positron density of 1026m -3 can be achieved, 7 orders of magnitude greater than achieved in previous experiments. Additionally, 35% of the laser energy is converted to a burst of γ rays of intensity 1022Wcm -2, potentially the most intense γ-ray source available in the laboratory. This absorption results in a strong feedback between both pair and γ-ray production and classical plasma physics in the new "QED-plasma" regime. © 2012 American Physical Society.

Item Type: Journal Article
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 19 April 2012
Dates:
DateEvent
19 April 2012Published
Volume: Vol.108
Number: No.16
Page Range: p. 165006
DOI: 10.1103/PhysRevLett.108.165006
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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