Abstract
We present measurements of magnetic fields generated in laser-driven coil targets irradiated by laser pulses of nanosecond duration, 1.053 μm wavelength, 500 J energy, and ∼ 10 15 W / cm 2 intensity, at the LULI2000 facility. Using two perpendicular probing axes, proton deflectometry is used to characterize the coil current and static charge at different times. Results reveal various deflection features that can be unambiguously linked to a looping quasi-steady current of well-understood polarity or to a static charging of the coil surface. Measured currents are broadly consistent with predictions from a laser-driven diode-current source and lumped circuit model, supporting the quasi-steady assessment of the discharges. Peak magnetic fields of ∼ 50 T at the center of 500-μm-diameter coils, obtained at the moderate laser intensity, open up the use of such laser-driven coil targets at facilities worldwide to study numerous phenomena in magnetized high-energy-density plasmas, and its potential applications.
| Original language | English |
|---|---|
| Article number | 032702 |
| Number of pages | 17 |
| Journal | Physics of Plasmas |
| Volume | 31 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 7 Mar 2024 |
Bibliographical note
Funding Information:This scientific paper has been published as part of the international project called “PMW,” co-financed by the Polish Ministry of Science and Higher Education within the framework of the scientific financial resources for 2021–2022 under the contract no 5205/CELIA/2021/0 (Project No. CNRS 239915).
Funding Information:
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No. 101052200—EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them. The involved teams have operated within the framework of the Enabling Research Projects: AWP17-ENR-IFE-CEA-02 Towards a universal Stark-Zeeman code for spectroscopic diagnostics and for integration in transport codes and AWP21-ENR-IFE.01.CEA Advancing shock ignition for direct-drive inertial fusion.
Funding Information:
This study has also received financial support from the French State in the framework of the Investments for the Future programme IdEx Université de Bordeaux/GPR LIGHT and from the Spanish Ministry of Science and Innovation through Research Grant No. PID2019-108764RB-I00.
Funding Information:
R.F. and C.K. acknowledge support from the Natural Sciences and Engineering Research Council of Canada (Grant No. RGPIN-2019–05013). Finally, M.B.G and J.S. acknowledge support from the U.S. Department of Energy, Award/Contract No. DE-SC0022250.
Funding Information:
This work has received funding from the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 871124 Laserlab-Europe.
Funding Information:
This work also received funding from the Engineering and Physical Science Research Council under Award No. EP/L01663X/1.
Funding Information:
C. V. and V. O.-B. acknowledge the support from the LIGHT S&T Graduate Program (PIA3 Investment for the Future Program, No. ANR-17-EURE-0027).
Funding Information:
This research was funded, in part, by l'Agence Nationale de la Recherche (ANR), project No. ANR-22-CE30-0044. For the purpose of open access, the authors have applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission.
Publisher Copyright:
© 2024 Author(s).