Dynamics of self-generated, large amplitude magnetic fields following high-intensity laser matter interaction

Anno: 2012

Autori: Sarri G.; Macchi A.; Cecchetti C.A.; Kar S.; Liseykina T.V.; Yang X.H.; Dieckmann M.E.; Fuchs J.; Galimberti M.; Gizzi L.A.; Jung R.; Kourakis I.; Osterholz J.; Pegoraro F.; Robinson A.P.L.; Romagnani L.; Willi O.; Borghesi M.

Affiliazione autori: School of Mathematics and Physics, The Queen’s University of Belfast, Belfast, BT7 1NN, United Kingdom;
Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, research unit “Adriano Gozzini”, 56124 Pisa, Italy;
Dipartimento di Fisica “E. Fermi”, Largo B. Pontecorvo 3, I-56127 Pisa, Italy;
Light4Tech s.r.l, 50018 Scandicci, Italy;
Institut für Physik, Universität Rostock, D-18051 Rostock, Germany;
LULI, Ecole Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau, France;
Rutherford Appleton Laboratory, Central Laser Facility, Chilton, OX11 0QX, United Kingdom;
Institute for Laser and Plasma Physics, Heinrich Heine University, Dusseldorf, Germany

Abstract: The dynamics of magnetic fields with an amplitude of several tens of megagauss, generated at both sides of a solid target irradiated with a high-intensity (similar to 10(19) W/cm(2)) picosecond laser pulse, has been spatially and temporally resolved using a proton imaging technique. The amplitude of the magnetic fields is sufficiently large to have a constraining effect on the radial expansion of the plasma sheath at the target surfaces. These results, supported by numerical simulations and simple analytical modeling, may have implications for ion acceleration driven by the plasma sheath at the rear side of the target as well as for the laboratory study of self-collimated high-energy plasma jets.


Volume: 109 (20)      Da Pagina: 205002  A: 205002

Maggiori informazioni: We acknowledge the support of the RAL-CLF staff. This work has been supported by the Engineering and Physical Sciences Research Council [Grants No. EP/E035728/1 (LIBRA consortium), No. EP/D06337X/1, and No. EP/J002550/1], by British Council-MURST-CRUI, by the Italian Ministry for University and Research (FIRB Project \”SULDIS\”) and by the Leverhulme Trust Fellowship No. ECF-2011-383. The PIC simulations were performed using the computing resources granted by the VSR of the Research Center Julich under Project No. HRO01. L. R. acknowledges support from the ULIMAC grant from the Triangle de la Physique RTRA network.
DOI: 10.1103/PhysRevLett.109.205002

Citazioni: 72
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