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Electron acceleration in laser wakefield experiment at Ecole Polytechnique

Published online by Cambridge University Press:  01 April 1999

F. DORCHIES ,
F. AMIRANOFF ,
S. BATON ,
D. BERNARD ,
B. CROS ,
D. DESCAMPS ,
F. JACQUET ,
V. MALKA ,
J. R. MARQUÈS  and
G. MATTHIEUSSENT
...Show all authors
F. DORCHIES
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
F. AMIRANOFF
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
S. BATON
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
D. BERNARD
Affiliation:
Laboratoire de Physique Nucléaire et des Hautes Energies, Ecole Polytechnique, IN2P3&CNRS, 91128 Palaiseau, France
B. CROS
Affiliation:
Laboratoire de Physique des Gaz et des Plasmas, Université Paris Sud, CNRS, 91405 Orsay, France
D. DESCAMPS
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
F. JACQUET
Affiliation:
Laboratoire de Physique Nucléaire et des Hautes Energies, Ecole Polytechnique, IN2P3&CNRS, 91128 Palaiseau, France
V. MALKA
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
J. R. MARQUÈS
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
G. MATTHIEUSSENT
Affiliation:
Laboratoire de Physique des Gaz et des Plasmas, Université Paris Sud, CNRS, 91405 Orsay, France
Ph. MINÉ
Affiliation:
Laboratoire de Physique Nucléaire et des Hautes Energies, Ecole Polytechnique, IN2P3&CNRS, 91128 Palaiseau, France
A. MODENA
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
P. MORA
Affiliation:
Centre de Physique Théorique, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
J. MORILLO
Affiliation:
Laboratoire des Solides Irradiés, CEA/DSM/DRECAM, URA-CNRS 1380, Ecole Polytechnique, 91128 Palaiseau, France
Z. NAJMUDIN
Affiliation:
Imperial College, Blackett Laboratory, SW7 2AZ London, UK
A. SOLODOV
Affiliation:
Centre de Physique Théorique, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
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Abstract

An experiment has been performed with the LULI Multi-TeraWatt Laser. The acceleration of electrons injected in a plasma wave generated by the laser wakefield mechanism has been observed with a maximum energy gain of 1.5 MeV. It has been shown that the electrons deflected during the interaction, could scatter on the walls of the experimental chamber, and fake a high-energy signal. A special effort has been given in the electron detection to separate the accelerated electrons signal from the background noise.The experimental results agree with theoretical predictions and numerical simulations when 3D effects on the electron beam are taken into account.

Type
Research Article
Information
Laser and Particle Beams , Volume 17 , Issue 2 , April 1999 , pp. 299 - 305
Copyright
© 1999 Cambridge University Press

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