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Gamma-ray emission in near critical density plasmas
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Brady, Christopher S., Ridgers, C. P., Arber, T. D. and Bell, Anthony R. (2013) Gamma-ray emission in near critical density plasmas. Plasma Physics and Controlled Fusion, Volume 55 (Number 12). Article number 124016. doi:10.1088/0741-3335/55/12/124016 ISSN 0741-3335.
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Official URL: http://dx.doi.org/10.1088/0741-3335/55/12/124016
Abstract
Previous work on the interaction of high power lasers with high density targets have identified that emission is primarily from interaction within the skin layer at the target front (e.g. Ridgers et al 2012 Phys. Rev. Lett. 108 165006). This mechanism is inefficient when compared to Reinjected Electron Synchrotron Emission (RESE) for laser interaction with low density solids (Brady et al 2012 Phys. Rev. Lett. 109 245006). However, these detailed analyses of the emission mechanisms were mainly based on 1D simulations and so did not incorporate some important 2D effects. In this paper these 1D emission mechanisms are confirmed to still exist in 2D with comparable properties and a new, intrinsically 2D, emission mechanism, termed edgeglow, is described which can convert 4–5% of the laser energy into gamma-ray energy.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Gamma rays, Laser-plasma interactions, Emission spectroscopy, Plasma density | ||||
Journal or Publication Title: | Plasma Physics and Controlled Fusion | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0741-3335 | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 55 | ||||
Number: | Number 12 | ||||
Page Range: | Article number 124016 | ||||
DOI: | 10.1088/0741-3335/55/12/124016 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | EP/G054950/1 (EPSRC) |
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