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 Wcm, 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 afer the laser drive. This sets a record for magnetic field generation by the short-pulse-powered capacitor-coil targets.
Keywords
Cite
@article{arxiv.2505.02332,
title = {Record Magnetic Field Generation by Short-Pulse Laser-Driven Capacitor-Coil Targets},
author = {Lan Gao and Yang Zhang and Hantao Ji and Brandon K. Russell and Geoffrey Pomraning and Jesse Griff-McMahon and Sallee Klein and Carolyn Kuranz and Mingsheng Wei},
journal= {arXiv preprint arXiv:2505.02332},
year = {2025}
}