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Title: Study of a magnetically driven reconnection platform using ultrafast proton radiography

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.5095960 · OSTI ID:1729750
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4];  [1]; ORCiD logo [5]; ORCiD logo [3];  [1]; ORCiD logo [6];  [6];  [4];  [3]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Beijing Normal Univ. (China)
  3. Univ. of Rochester, NY (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Univ. of Michigan, Ann Arbor, MI (United States)
  6. Univ. of Science and Technology of China, Hefei (China)

A novel magnetically driven reconnection platform was created by a pair of U-shaped Cu coils that connect two parallel Cu plates irradiated at a focused laser intensity of ~3 × 1016 W/cm2 and characterized using ultrafast proton radiography. The proton data show two prolate voids, each corresponding to the coil current, with an inferred maximum magnitude of 57 ± 4 kA. A center “flasklike” feature was also observed in the proton radiographs. By prescribing electromagnetic fields associated with magnetic reconnection in proton ray tracing simulations, characteristics of this center feature were reproduced. Finally, these results demonstrate the robustness of the laser-driven capacitor coils for generating strong magnetic fields and provide promise of using such coils as a viable platform for studying magnetically driven reconnection in the laboratory.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; NA0003608
OSTI ID:
1729750
Alternate ID(s):
OSTI ID: 1526096
Report Number(s):
LLNL-JRNL-812053; 1018674; TRN: US2205125
Journal Information:
Physics of Plasmas, Vol. 26, Issue 6; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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