Magnetically Guided Fast Electrons in Cylindrically Compressed Matter

Year: 2011

Authors: Perez F., Debayle A., Honrubia J., Koenig M., Batani D., Baton S.D., Beg F.N., Benedetti C., Brambrink E., Chawla S., Dorchies F., Fourment C., Galimberti M., Gizzi LA., Gremillet L., Heathcote R., Higginson D.P., Hulin S., Jafer R., Koester P., Labate L., Lancaster K.L., MacKinnon A.J., MacPhee A.G., Nazarov W., Nicolai P., Pasley J., Ramis R., Richetta M., Santos J.J., Sgattoni A., Spindloe C., Vauzour B., Vinci T., Volpe L.

Autors Affiliation: LULI, Ecole Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau Cedex, France;
ETSI Aeronauticos, Universidad Politecnica de Madrid, Spain;
Dipartimento di Fisica, Università di Milano-Bicocca, Italy;
University of California, San Diego, La Jolla, California 92093, USA;
Dipartimento di Fisica, Università di Bologna, Bologna, Italy;
Lawrence Livermore National Laboratory, Livermore, California 94550, USA;
Université de Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications (CELIA), Talence, F-33405, France;
Central Laser Facility, Rutherford Appleton Laboratory, Didcot, United Kingdom
CNR – Istituto Nazionale di Ottica UOS Adriano Gozzini, ILIL, Via G. Moruzzi 1, Pisa, Italy
CEA, DAM, DIF, F-91297 Arpajon, France;
University of St. Andrews, Fife KY16 9AJ, Scotland, United Kingdom;
York Plasma Institute, Department of Physics, University of York, York, YO10 5DQ, United Kingdom;
Dipartimento di Ingegneria Meccanica, Università di Roma Tor Vergata, Italy

Abstract: Fast electrons produced by a 10 ps, 160 J laser pulse through laser-compressed plastic cylinders are studied experimentally and numerically in the context of fast ignition. K(alpha)-emission images reveal a collimated or scattered electron beam depending on the initial density and the compression timing. A numerical transport model shows that implosion-driven electrical resistivity gradients induce strong magnetic fields able to guide the electrons. The good agreement with measured beam sizes provides the first experimental evidence for fast-electron magnetic collimation in laser-compressed matter.


Volume: 107 (6)      Pages from: 065004  to: 065004

More Information: The authors acknowledge the support of the HiPER project and Preparatory Phase Funding Agencies (EC, MSMT and STFC) in undertaking this work. The numerical study was supported by Grant No. ENE2009-11668 of the Spanish Ministry of Education and Research and by the European SILMI program. The authors thankfully acknowledge the computer resources, technical expertise, and assistance provided by the CeSViMa. This work was performed using HPC resources from GENCI-[CCRT/CINES] (Grant No. 2010-x2010056304).
DOI: 10.1103/PhysRevLett.107.065004

Citations: 47
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