A laser–plasma accelerator producing monoenergetic electron beams

J. Faure, Y. Glinec, A. Pukhov, S. Kiselev, S. Gordienko, E. Lefebvre, J.-P. Rousseau, F. Burgy and V. Malka ()
Additional contact information
J. Faure: Ecole Polytechnique, ENSTA, CNRS, UMR 7639
Y. Glinec: Ecole Polytechnique, ENSTA, CNRS, UMR 7639
A. Pukhov: Institut fur Theoretische Physik
S. Kiselev: Institut fur Theoretische Physik
S. Gordienko: Institut fur Theoretische Physik
E. Lefebvre: CEA/DAM Ile-de-France
J.-P. Rousseau: Ecole Polytechnique, ENSTA, CNRS, UMR 7639
F. Burgy: Ecole Polytechnique, ENSTA, CNRS, UMR 7639
V. Malka: Ecole Polytechnique, ENSTA, CNRS, UMR 7639

Nature, 2004, vol. 431, issue 7008, 541-544

Abstract: Abstract Particle accelerators are used in a wide variety of fields, ranging from medicine and biology to high-energy physics. The accelerating fields in conventional accelerators are limited to a few tens of MeV m-1, owing to material breakdown at the walls of the structure. Thus, the production of energetic particle beams currently requires large-scale accelerators and expensive infrastructures. Laser–plasma accelerators1 have been proposed as a next generation of compact accelerators because of the huge electric fields they can sustain2,3,4,5 (>100 GeV m-1). However, it has been difficult to use them efficiently for applications because they have produced poor-quality particle beams with large energy spreads2,3,4,5,6,7,8,9,10, owing to a randomization of electrons in phase space. Here we demonstrate that this randomization can be suppressed and that the quality of the electron beams can be dramatically enhanced. Within a length of 3 mm, the laser drives a plasma bubble11 that traps and accelerates plasma electrons. The resulting electron beam is extremely collimated and quasi-monoenergetic, with a high charge of 0.5 nC at 170 MeV.

Date: 2004
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DOI: 10.1038/nature02963

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