Magnetic field measurements in laser-produced plasmas via proton deflectometry

C.A. Cecchetti, Marco Borghesi, J. Fuchs, G. Schurtz, Satyabrata Kar, A. Macchi, Lorenzo Romagnani, P.A. Wilson, P. Antici, R. Jung, J. Osterholtz, C.A. Pipahl, O. Willi, A. Schiavi, M. Notley, D. Neely

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Abstract

Large magnetic fields generated during laser-matter interaction at irradiances of ~ 5×1014 W?cm-2 have been measured using a deflectometry technique employing MeV laser-accelerated protons. Azimuthal magnetic fields were identified unambiguously via a characteristic proton deflection pattern and found to have an amplitude of ~ 45 T in the outer coronal region. Comparison with magnetohydrodynamic simulations confirms that in this regime the mathTe×mathne source is the main field generation mechanism, while additional terms are negligible.
Original languageEnglish
Article number043102
Pages (from-to)043102-043102-5
Number of pages43098
JournalPhysics of Plasmas
Volume16
Issue number4
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Cecchetti, C. A., Borghesi, M., Fuchs, J., Schurtz, G., Kar, S., Macchi, A., Romagnani, L., Wilson, P. A., Antici, P., Jung, R., Osterholtz, J., Pipahl, C. A., Willi, O., Schiavi, A., Notley, M., & Neely, D. (2009). Magnetic field measurements in laser-produced plasmas via proton deflectometry. Physics of Plasmas, 16(4), 043102-043102-5. [043102]. https://doi.org/10.1063/1.3097899