Laser-driven platform for generation and characterization of strong quasi-static magnetic fields
Abstract
Quasi-static magnetic-fields up to T are generated in the interaction of intense laser pulses (J, ns, W/cm) with capacitor-coil targets of different materials. The reproducible magnetic-field peak and rise-time, consistent with the laser pulse duration, were accurately inferred from measurements with GHz-bandwidth inductor pickup coils (B-dot probes). Results from Faraday rotation of polarized optical laser light and deflectometry of energetic proton beams are consistent with the B-dot probe measurements at the early stages of the target charging, up to ns, and then are disturbed by radiation and plasma effects. The field has a dipole-like distribution over a characteristic volume of mm, which is coherent with theoretical expectations. These results demonstrate a very efficient conversion of the laser energy into magnetic fields, thus establishing a robust laser-driven platform for reproducible, well characterized, generation of quasi-static magnetic fields at the kT-level, as well as for magnetization and accurate probing of high-energy-density samples driven by secondary powerful laser or particle beams.
Keywords
Cite
@article{arxiv.1503.00247,
title = {Laser-driven platform for generation and characterization of strong quasi-static magnetic fields},
author = {J. J. Santos and M. Bailly-Grandvaux and L. Giuffrida and P. Forestier-Colleoni and S. Fujioka and Z. Zhang and Ph. Korneev and R. Bouillaud and S. Dorard and D. Batani and M. Chevrot and J. Cross and R. Crowston and J. -L. Dubois and J. Gazave and G. Gregori and E. d'Humières and S. Hulin and K. Ishihara and S. Kojima and E. Loyez and J. -R. Marquès and A. Morace and Ph. Nicolaï and O. Peyrusse and A. Poyé and D. Raffestin and J. Ribolzi and M. Roth and G. Schaumann and F. Serres and V. T. Tikhonchuk and Ph. Vacar and N. Woolsey},
journal= {arXiv preprint arXiv:1503.00247},
year = {2015}
}
Comments
16 pages, 7 figures