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.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (20)
Yang Zhang
Ryo Omura
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Rinya Akematsu
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
King Fai Farley Law
Institute of Laser Engineering, The University of Osaka 4 , 2-6 Yamada-oka, Suita, Osaka 565-0871,
Brandon K. Russell
Department of Astrophysical Sciences, Princeton University 1 , Princeton, New Jersey 08544,
Geoffrey Pomraning
Department of Astrophysical Sciences, Princeton University 1 , Princeton, New Jersey 08544,
Kian Orr
Department of Mechanical and Aerospace Engineering, Princeton University 5 , Princeton, New Jersey 08544,
Kai Kimura
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Muhammad Fauzan Syahbana
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Yuga Karaki
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Hiroki Matsubara
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Ryuya Yamada
Jinyuan Dun
Graduate School of Science, The University of Osaka 3 , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043,
Ryunosuke Takizawa
Institute of Laser Engineering, The University of Osaka 4 , 2-6 Yamada-oka, Suita, Osaka 565-0871,
Yasunobu Arikawa
Tatiana Pikuz
Institute of Laser Engineering, The University of Osaka 4 , 2-6 Yamada-oka, Suita, Osaka 565-0871,
Yuji Fukuda
Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology 6 , 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215,
Lan Gao
Hantao Ji
Department of Astrophysical Sciences, Princeton University 1 , Princeton, New Jersey 08544,
Shinsuke Fujioka