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Laser-Particle Collider for Multi-GeV Photon Production

Journal article
Authors J. Magnusson
Arkady Gonoskov
Mattias Marklund
T. Z. Esirkepov
J. K. Koga
K. Kondo
M. Kando
S. V. Bulanov
G. Korn
S. S. Bulanov
Published in Physical Review Letters
Volume 122
Issue 25
ISSN 0031-9007
Publication year 2019
Published at Department of Physics (GU)
Language en
Keywords Electrons, Colliding laser pulse, Compton backscattering, Electron-positron pairs, Fundamental studies, High energy electron beams, High energy photons, High-field regions, Strong laser field, Photons
Subject categories Atom and Molecular Physics and Optics


As an alternative to Compton backscattering and bremsstrahlung, the process of colliding high-energy electron beams with strong laser fields can more efficiently provide both a cleaner and brighter source of photons in the multi-GeV range for fundamental studies in nuclear and quark-gluon physics. In order to favor the emission of high-energy quanta and minimize their decay into electron-positron pairs, the fields must not only be sufficiently strong, but also well localized. We here examine these aspects and develop the concept of a laser-particle collider tailored for high-energy photon generation. We show that the use of multiple colliding laser pulses with 0.4 PW of total power is capable of converting more than 18% of multi-GeV electrons passing through the high-field region into photons, each of which carries more than half of the electron initial energy. © 2019 authors. Published by the American Physical Society.

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