Optimal parameters for radiation reaction experiments
File(s)Arran_2019_Plasma_Phys._Control._Fusion_61_074009.pdf (1.42 MB)
Published version
Author(s)
Type
Journal Article
Abstract
As new laser facilities are developed with intensities on the scale of ${10}^{22}\mbox{--}{10}^{24}\,{\rm{W}}\,{\mathrm{cm}}^{-2}$, it becomes ever more important to understand the effect of strong field quantum electrodynamic processes, such as quantum radiation reaction, which will play a dominant role in laser-plasma interactions at these intensities. Recent all-optical experiments, where GeV electrons from a laser wakefield accelerator encountered a counter-propagating laser pulse with a 0 > 10, have produced evidence of radiation reaction, but have not conclusively identified quantum effects nor their most suitable theoretical description. Here we show the number of collisions and the conditions required to accomplish this, based on a simulation campaign of radiation reaction experiments under realistic conditions. We conclude that while the critical energy of the photon spectrum distinguishes classical and quantum-corrected models, a better means of distinguishing the stochastic and deterministic quantum models is the change in the electron energy spread. This is robust against shot-to-shot fluctuations and the necessary laser intensity and electron beam energies are already available. For example, we show that so long as the electron energy spread is below 25%, collisions at a 0 = 10 with electron energies of $500\,\mathrm{MeV}$ could differentiate between different quantum models in under 30 shots, even with shot-to-shot variations at the 50% level.
Date Issued
2019-06-11
Date Acceptance
2019-05-10
Citation
Plasma Physics and Controlled Fusion, 2019, 61 (7), pp.1-12
ISSN
0741-3335
Publisher
IOP Publishing
Start Page
1
End Page
12
Journal / Book Title
Plasma Physics and Controlled Fusion
Volume
61
Issue
7
Copyright Statement
© 2019 IOP Publishing Ltd. Original content from this work may be used under the terms
of the Creative Commons Attribution 3.0 licence. Any
further distribution of this work must maintain attribution to the author(s) and
the title of the work, journal citation and DOI.
of the Creative Commons Attribution 3.0 licence. Any
further distribution of this work must maintain attribution to the author(s) and
the title of the work, journal citation and DOI.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000471250500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Fluids & Plasmas
Physics
radiation reaction
Monte-Carlo simulations
high field physics
laser-plasma
interactions
LASER
ELECTRONS
BEAMS
Publication Status
Published
Article Number
ARTN 074009
Date Publish Online
2019-06-11