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American Physical Society, Physical Review Letters, 20(109), 2012

DOI: 10.1103/physrevlett.109.205002

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

Journal article published in 2012 by G. Sarri, A. Macchi, S. Kar, Liseykina Tv, T. V. Liseykina, C. A. Cecchetti, X. H. Yang, Yang Xh, Dieckmann Me, Gizzi La, M. E. Dieckmann ORCID, M. Galimberti, Julien Fuchs ORCID, L. A. Gizzi, R. Jung and other authors.
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This paper is available in a repository.

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Abstract

The dynamics of magnetic fields with amplitude of several tens of Megagauss, generated at both sides of a solid target irradiated with a high intensity (? 1019W/cm2) 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. ; Comment: Accepted for publication in Physical Review Letters