DOE OSTI · 3371695
Time-resolved interferometric measurements of plasma density evolution in laser-driven capacitor-coil targets
Abstract
Laser-driven capacitor-coil targets provide a compact platform for generating strong magnetic fields and are widely used in magnetized high-energy-density (HED) plasma experiments. In addition to magnetic-field generation, these targets also produce plasma in the coil region, which can influence the subject physical processes and interact with secondary targets or external plasmas in their applications. However, direct, time-resolved measurements of the plasma density surrounding the coil remain limited. Here, we report interferometric measurements of the plasma density evolution in laser-driven capacitor-coil targets irradiated by the University of Osaka LFEX laser. Two-dimensional electron density maps reveal two distinct plasma sources loading the coil region: plasma generated in the coil itself and plasma produced by laser ablation of the target plates. These results provide quantitative information on plasma loading and evolution in capacitor-coil targets and are directly relevant to the design and modeling of magnetized HED plasma experiments.
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Zhang, Yang [Princeton University, NJ (United States); University Corporation for Atmospheric Research (UCAR), Boulder, CO (United States)] (ORCID:0000000241689225), Omura, Ryo [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)], Akematsu, Rinya [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)], Law, King Fai Farley [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0000000254848870), Russell, Brandon K. [Princeton University, NJ (United States)] (ORCID:0000000300112419), Pomraning, Geoffrey [Princeton University, NJ (United States)] (ORCID:0009000681679490), Orr, Kian [Princeton University, NJ (United States)] (ORCID:0009000592693194), Kimura, Kai [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0009000640697473), Syahbana, Muhammad Fauzan [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)], Karaki, Yuga [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0009000367912186), Matsubara, Hiroki [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0009000794996521), Yamada, Ryuya [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0009000599256325), Dun, Jinyuan [University of Osaka, Toyonaka (Japan); University of Osaka, Suita (Japan)] (ORCID:0000000229676691), Takizawa, Ryunosuke [University of Osaka, Suita (Japan)] (ORCID:0000000309987596), Arikawa, Yasunobu [University of Osaka, Suita (Japan)] (ORCID:0000000231423060), Pikuz, Tatiana [University of Osaka, Suita (Japan)] (ORCID:0000000259719250), Fukuda, Yuji [National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto (Japan). Kansai Photon Science Institute (KPSI)] (ORCID:0000000213480483), Gao, Lan [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Princeton University, NJ (United States)] (ORCID:0000000241192825), Ji, Hantao [Princeton University, NJ (United States); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000196009963), Fujioka, Shinsuke [University of Osaka, Suita (Japan)] (ORCID:0000000184061772). 2026-06-10. Time-resolved interferometric measurements of plasma density evolution in laser-driven capacitor-coil targets. https://doi.org/10.1063/5.0325266
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