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Anomalous heating and plasmoid formation in a driven magnetic reconnection experiment

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Title: Anomalous heating and plasmoid formation in a driven magnetic reconnection experiment
Authors: Hare, JD
Suttle, L
Lebedev, SV
Loureiro, NF
Ciardi, A
Burdiak, GC
Chittenden, JP
Clayson, T
Garcia, C
Niasse, N
Robinson, T
Smith, RA
Stuart, N
Suzuki-Vidal, F
Swadling, GF
Ma, J
Wu, J
Yang, Q
Item Type: Journal Article
Abstract: We present a detailed study of magnetic reconnection in a quasi-two-dimensional pulsed-power driven laboratory experiment. Oppositely directed magnetic fields (B=3  T), advected by supersonic, sub-Alfvénic carbon plasma flows (Vin=50  km/s), are brought together and mutually annihilate inside a thin current layer (δ=0.6  mm). Temporally and spatially resolved optical diagnostics, including interferometry, Faraday rotation imaging, and Thomson scattering, allow us to determine the structure and dynamics of this layer, the nature of the inflows and outflows, and the detailed energy partition during the reconnection process. We measure high electron and ion temperatures (Te=100  eV, Ti=600  eV), far in excess of what can be attributed to classical (Spitzer) resistive and viscous dissipation. We observe the repeated formation and ejection of plasmoids, consistent with the predictions from semicollisional plasmoid theory.
Issue Date: 28-Feb-2017
Date of Acceptance: 1-Feb-2017
URI: http://hdl.handle.net/10044/1/45739
DOI: 10.1103/PhysRevLett.118.085001
ISSN: 0031-9007
Publisher: American Physical Society
Journal / Book Title: Physical Review Letters
Volume: 118
Issue: 8
Copyright Statement: © 2017 American Physical Society. Phys. Rev. Lett. 118, 085001 – Published 21 February 2017
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
U.S Department of Energy
U.S Department of Energy
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/N013379/1
675350-9958
416729-G
EP/G001324/1
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
physics.plasm-ph
physics.plasm-ph
General Physics
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status: Published
Article Number: ARTN 085001
Online Publication Date: 2020-02-21
Appears in Collections:Physics
Plasma Physics
Faculty of Natural Sciences