Laser-driven strong magnetostatic fields with applications to charged beam transport and magnetized high energy-density physics
- Univ. Bordeaux, Talence (France). CNRS, CEA, Centre Lasers Intenses et Applications (CELIA); DOE/OSTI
- Univ. Bordeaux, Talence (France). CNRS, CEA, Centre Lasers Intenses et Applications (CELIA); Univ. of California at San Diego, La Jolla, CA (United States). Dept. of Mechanical and Aerospace Engineering
- Univ. Bordeaux, Talence (France). CNRS, CEA, Centre Lasers Intenses et Applications (CELIA); Technische Univ. Darmstadt, Darmstadt (Germany). Inst. für Kernphysik
- Univ. of California at San Diego, La Jolla, CA (United States). Dept. of Mechanical and Aerospace Engineering
- Univ. Bordeaux, Talence (France). CNRS, CEA, Centre Lasers Intenses et Applications (CELIA)
- Aix Marseill Univ., Marseille (France). Centre national de la recherche scientifique (CNRS)
- Univ. de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria (Spain). iUNAT, Dept. de Física
- Osaka Univ., Osaka (Japan). Inst. of Laser Engineering
- Univ. de Valladolid, Valladolid (Spain). Atómica y Óptica, Dept. de Física Teórica
- Univ. Bordeaux, Talence (France). CNRS, CEA, Centre Lasers Intenses et Applications (CELIA); Czech Academy of Sciences, Dolní Břežany (Czech Republic). Inst. of Phyiscs, ELI-Beamlines
- Atomique Energie Commission (CEA), Arpajon (France) Direction des Applications Militaires Ile-de-France (DAM DIF)
- Univ. Politécnica de Madrid, Madrid (Spain). ETSI Aeronáutica y del Espacio
- National Research Nuclear Univ. MEPhl, Moscow (Russia); Lebedev Physical Inst., Moscow (Russia)
- LULI, UMR, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, and UPMC, Sorbonne Universités, Palaiseau (France)
- Imperial College London, London (United Kingdom). Blackett Lab.
- Technische Univ. Darmstadt, Darmstadt (Germany). Inst. für Kernphysik
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Inst. for Radiation Physics
- Univ. of York, Heslington (United Kingdom). Dept. of Physics
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 the model used in our paper, which describes the evolution of the discharge current, the major control parameter is the laser irradiance Ilasλ2las. 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 μm 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.
- Research Organization:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0018312
- OSTI ID:
- 1540163
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 25; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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