Signatures of quantum effects on radiation reaction in laser-electron-beam collisions

C. P. Ridgers, T. G. Blackburn, D. Del Sorbo, L. E. Bradley, C. Slade-Lowther, C. D. Baird, S. P. D. Mangles, P. McKenna, M. Marklund, C. D. Murphy, A. G. R. Thomas

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Two signatures of quantum effects on radiation reaction in the collision of a GeV electron beam with a high intensity (>3×1020Wcm-2]]>) laser pulse have been considered. We show that the decrease in the average energy of the electron beam may be used to measure the Gaunt factor for synchrotron emission. We derive an equation for the evolution of the variance in the energy of the electron beam in the quantum regime, i.e. quantum efficiency parameter . We show that the evolution of the variance may be used as a direct measure of the quantum stochasticity of the radiation reaction and determine the parameter regime where this is observable. For example, stochastic emission results in a 25% increase in the standard deviation of the energy spectrum of a GeV electron beam, 1 fs after it collides with a laser pulse of intensity 1021W cm-2. This effect should therefore be measurable using current high-intensity laser systems.

LanguageEnglish
Article number715830502
Number of pages17
JournalJournal of Plasma Physics
Volume83
Issue number5
Early online date11 Sep 2017
DOIs
Publication statusPublished - 31 Oct 2017

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signatures
laser beams
electron beams
collisions
radiation
pulses
high power lasers
lasers
quantum efficiency
standard deviation
synchrotrons
energy spectra
energy

Keywords

  • intense particle beams
  • plasma dynamics
  • plasma simulation

Cite this

Ridgers, C. P., Blackburn, T. G., Del Sorbo, D., Bradley, L. E., Slade-Lowther, C., Baird, C. D., ... Thomas, A. G. R. (2017). Signatures of quantum effects on radiation reaction in laser-electron-beam collisions. Journal of Plasma Physics, 83(5), [715830502]. https://doi.org/10.1017/S0022377817000642
Ridgers, C. P. ; Blackburn, T. G. ; Del Sorbo, D. ; Bradley, L. E. ; Slade-Lowther, C. ; Baird, C. D. ; Mangles, S. P. D. ; McKenna, P. ; Marklund, M. ; Murphy, C. D. ; Thomas, A. G. R. / Signatures of quantum effects on radiation reaction in laser-electron-beam collisions. In: Journal of Plasma Physics. 2017 ; Vol. 83, No. 5.
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Ridgers, CP, Blackburn, TG, Del Sorbo, D, Bradley, LE, Slade-Lowther, C, Baird, CD, Mangles, SPD, McKenna, P, Marklund, M, Murphy, CD & Thomas, AGR 2017, 'Signatures of quantum effects on radiation reaction in laser-electron-beam collisions' Journal of Plasma Physics, vol. 83, no. 5, 715830502. https://doi.org/10.1017/S0022377817000642

Signatures of quantum effects on radiation reaction in laser-electron-beam collisions. / Ridgers, C. P.; Blackburn, T. G.; Del Sorbo, D.; Bradley, L. E.; Slade-Lowther, C.; Baird, C. D.; Mangles, S. P. D.; McKenna, P.; Marklund, M.; Murphy, C. D.; Thomas, A. G. R.

In: Journal of Plasma Physics, Vol. 83, No. 5, 715830502, 31.10.2017.

Research output: Contribution to journalArticle

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AU - Slade-Lowther, C.

AU - Baird, C. D.

AU - Mangles, S. P. D.

AU - McKenna, P.

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AU - Murphy, C. D.

AU - Thomas, A. G. R.

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Ridgers CP, Blackburn TG, Del Sorbo D, Bradley LE, Slade-Lowther C, Baird CD et al. Signatures of quantum effects on radiation reaction in laser-electron-beam collisions. Journal of Plasma Physics. 2017 Oct 31;83(5). 715830502. https://doi.org/10.1017/S0022377817000642