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http://hdl.handle.net/10553/41410
Título: | Laser-driven strong magnetostatic fields with applications to charged beam transport and magnetized high energy-density physics | Autores/as: | Santos, J. J. Bailly-Grandvaux, M. Ehret, M. Arefiev, A. V. Batani, D. Beg, F. N. Calisti, A. Ferri, S. Florido, R. Forestier-Colleoni, P. Fujioka, S. Gigosos, M. A. Giuffrida, L. Gremillet, L. Honrubia, J. J. Kojima, S. Korneev, Ph. Law, K. F. F. Marques, J. -R. Morace, A. Mossé, C. Peyrusse, O. Rose, S. Roth, M. Sakata, S. Schaumann, G. Suzuki-Vidal, F. Tikhonchuk, V. T. Toncian, T. Woolsey, N. Zhang, Z. |
Clasificación UNESCO: | 22 Física | Palabras clave: | Plasma processing Electronic transport Plasma diagnostics Fusion energy Dielectric properties, et al. |
Fecha de publicación: | 2018 | Proyectos: | Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium | Publicación seriada: | Physics of Plasmas | Conferencia: | 59th Annual Meeting of the APS-Division-of-Plasma-Physics (DPP) | Resumen: | Powerful nanosecond laser-plasma processes are explored to generate discharge currents of a few 100 kA in coil targets, yielding magnetostatic fields (B-fields) in excess of 0.5 kT. The quasi-static currents are provided from hot electron ejection from the laser-irradiated surface. According to our model, which describes the evolution of the discharge current, the major control parameter is the laser irradiance I-las lambda(2)(las). The space-time evolution of the B-fields is experimentally characterized by high-frequency bandwidth B-dot probes and proton-deflectometry measurements. The magnetic pulses, of ns-scale, are long enough to magnetize secondary targets through resistive diffusion. We applied it in experiments of laser-generated relativistic electron transport through solid dielectric targets, yielding an unprecedented 5-fold enhancement of the energy-density flux at 60 mu m depth, compared to unmagnetized transport conditions. These studies pave the ground for magnetized high-energy density physics investigations, related to laser-generated secondary sources of radiation and/or high-energy particles and their transport, to high-gain fusion energy schemes, and to laboratory astrophysics. | URI: | http://hdl.handle.net/10553/41410 | ISSN: | 1070-664X | DOI: | 10.1063/1.5018735 | Fuente: | Physics of Plasmas [ISSN 1070-664X], v. 25 (5), article number 056705 |
Colección: | Artículos |
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