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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
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 | ||||
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| 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: |
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| 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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