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Title: Laser-driven quasi-static B-fields for magnetized high-energy-density experiments

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/5.0190305 · OSTI ID:2567794
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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 ∼1015 W/cm2 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.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
Engineering and Physical Science Research Council (EPSRC); Ministry of Science and Higher Education (Poland); Spain, Ministry of Science, Innovation and Universities (MICIU); USDOE
Grant/Contract Number:
SC0022250
OSTI ID:
2567794
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 31; ISSN 1070-664X
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English

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