Experimental Evidence of Radiation Reaction in the Collision of a High-Intensity Laser Pulse with a Laser-Wakefield Accelerated Electron Beam
Journal article, 2018

The dynamics of energetic particles in strong electromagnetic fields can be heavily influenced by the energy loss arising from the emission of radiation during acceleration, known as radiation reaction. When interacting with a high-energy electron beam, today's lasers are sufficiently intense to explore the transition between the classical and quantum radiation reaction regimes. We present evidence of radiation reaction in the collision of an ultrarelativistic electron beam generated by laser-wakefield acceleration (μ 500 MeV) with an intense laser pulse (a0 > 10). We measure an energy loss in the postcollision electron spectrum that is correlated with the detected signal of hard photons (γ rays), consistent with a quantum description of radiation reaction. The generated γ rays have the highest energies yet reported from an all-optical inverse Compton scattering scheme, with critical energy > 30 MeV.

Author

J. M. Cole

Imperial College London

K. T. Behm

University of Michigan

E. Gerstmayr

Imperial College London

Tom Blackburn

Chalmers, Physics, Theoretical Physics

J. C. Wood

Imperial College London

C. D. Baird

University of York

M. J. Duff

University of Strathclyde

Christopher Harvey

Chalmers, Physics, Theoretical Physics

Antony Ilderton

University of Plymouth

Chalmers, Physics, Theoretical Physics

A. S. Joglekar

University of California

University of Michigan

K. Krushelnick

University of Michigan

S. Kuschel

Friedrich Schiller University Jena

Mattias Marklund

Chalmers, Physics, Theoretical Physics

P. McKenna

University of Strathclyde

C. D. Murphy

University of York

K. Poder

Imperial College London

C. P. Ridgers

University of York

G. M. Samarin

Queen's University Belfast

G. Sarri

Queen's University Belfast

D. R. Symes

Rutherford Appleton Laboratory

A. G.R. Thomas

Lancaster University

University of Michigan

J. Warwick

Queen's University Belfast

M. Zepf

Helmholtz-Institute Jena

Queen's University Belfast

Friedrich Schiller University Jena

Z. Najmudin

Imperial College London

S. P. D. Mangles

Imperial College London

Physical Review X

2160-3308 (ISSN)

Vol. 8 1 011020

Subject Categories

Accelerator Physics and Instrumentation

Atom and Molecular Physics and Optics

Other Physics Topics

DOI

10.1103/PhysRevX.8.011020

More information

Latest update

5/25/2018