Ultrafast proton radiography of the magnetic fields generated by a laser-driven coil current
- Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
- Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics; General Atomics, San Diego, CA (United States)
- General Atomics, San Diego, CA (United States)
Magnetic fields generated by a current flowing through a U-shaped coil connecting two copper foils were measured using ultrafast proton radiography. Two ∼1.25 kJ, 1-ns laser pulses propagated through laser entrance holes in the front foil, and were focused to the back foil with an intensity of ∼3 × 1016W/cm2. The intense laser-solid interaction induced a high voltage between the copper foils and generated a large current in the connecting coil. The proton data show ∼40-50 Tesla magnetic fields at the center of the coil ∼3-4 ns after laser irradiation. The experiments provide significant insight for future target designs that aim to develop a powerful source of external magnetic fields for various applications in high-energy-density science.
- Research Organization:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Princeton Univ., NJ (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- NA0002205
- OSTI ID:
- 1259385
- Alternate ID(s):
- OSTI ID: 1247894; OSTI ID: 1512468
- Journal Information:
- Physics of Plasmas, Vol. 23, Issue 4; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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