Year: 2025
Type: article
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 × 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.
Source: Applied Physics Letters
DOI: 10.1063/5.0279265
Authors: Lan Gao, Yang Zhang, Hantao Ji, Brandon K. Russell, Geoffrey Pomraning, Jesse Griff-McMahon, Sallee Klein, Carolyn Kuranz, Mingsheng Wei
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4413910288