DOE OSTI · 2589005
Record magnetic field generation by short-pulse laser-driven capacitor-coil targets
Abstract
Magnetic fields generated by capacitor-coil targets driven by intense short-pulse lasers have been characterized using ultrafast proton radiography. A 1-kJ, 15-ps laser at a center wavelength of 1053 nm irradiated the back plate of the capacitor with an intensity of ∼8.3 × 10 18 W/cm 2 , creating ultra large currents in the connecting coils. High-quality proton data obtained in the axial probing geometry show definitive signatures of magnetic field generation, allowing precision measurement of the field distribution and strength. The data show a coil current of 120 ± 10 kA producing 200 ± 20 Tesla magnetic fields at the coil center at 1.127 ns after the laser drive. In conclusion, this sets a record for magnetic field generation by the short-pulse-powered capacitor-coil targets.
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Gao, Lan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Princeton Univ., NJ (United States)] (ORCID:0000000241192825), Zhang, Yang [Princeton Univ., NJ (United States); University Corporation for Atmospheric Research (UCAR), Boulder, CO (United States)] (ORCID:0000000241689225), Ji, Hantao [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Princeton Univ., NJ (United States)] (ORCID:0000000196009963), Russell, Brandon K. [Princeton Univ., NJ (United States)] (ORCID:0000000300112419), Pomraning, Geoffrey [Princeton Univ., NJ (United States)] (ORCID:0009000681679490), Griff-McMahon, Jesse [Princeton Univ., NJ (United States)] (ORCID:0000000207740613), Klein, Sallee [Univ. of Michigan, Ann Arbor, MI (United States)] (ORCID:0000000337558617), Kuranz, Carolyn [Univ. of Michigan, Ann Arbor, MI (United States)] (ORCID:0000000208731487), Wei, Mingsheng [Univ. of Rochester, NY (United States). Laboratory for Laser Energetics] (ORCID:0000000242576409). 2025-09-02. Record magnetic field generation by short-pulse laser-driven capacitor-coil targets. https://doi.org/10.1063/5.0279265
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