Record magnetic field generation by short-pulse laser-driven capacitor-coil targets
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 × 1018 W/cm2, 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. This sets a record for magnetic field generation by the short-pulse-powered capacitor-coil targets.
Authors
- M. S. Wei (ORCID: https://orcid.org/0000-0002-4257-6409)
- Jesse Griff-McMahon (ORCID: https://orcid.org/0000-0002-0774-0613)
- Lan Gao (ORCID: https://orcid.org/0000-0002-4119-2825)
- Brandon K. Russell (ORCID: https://orcid.org/0000-0003-0011-2419)
- Sallee Klein (ORCID: https://orcid.org/0000-0003-3755-8617)
- Hantao Ji (ORCID: https://orcid.org/0000-0001-9600-9963)
- Carolyn Kuranz (ORCID: https://orcid.org/0000-0002-0873-1487)
- Yang Zhang (ORCID: https://orcid.org/0000-0002-4168-9225)
- G. C. Pomraning (ORCID: https://orcid.org/0009-0006-8167-9490)
Institutions
- Princeton University (US)
- University of Michigan (US)
- University Corporation for Atmospheric Research (US)
- Princeton Plasma Physics Laboratory (US)
- Energetics (United States) (US)
- University of Rochester (US)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-09-01
- DOI
- https://doi.org/10.1063/5.0279265
- Citations
- 1
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- U.S. Department of Energy
- NASA Headquarters