Study of Local Reconnection Physics in a Laboratory Plasma

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A short review of physics results obtained in the Magnetic Reconnection Experiment (MRX) is given with an emphasis on the local features of magnetic reconnection in a controlled environment. Stable two-dimensional current sheets are formed and sustained by induction using two internal coils. The observed reconnection rates are found to be quantitatively consistent with a generalized Sweet-Parker model which incorporates compressibility, unbalanced upstream-downstream pressure, and the effective resistivity. The latter is significantly enhanced over its classical values in the low collisionality regime. Strong local ion heating is measured by an optical probe during the reconnection process, and at least half ... continued below

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720 Kilobytes pages

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Ji, Hantao; Carter, Troy; Hsu, Scott & Yamada, Masaaki June 11, 2001.

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Description

A short review of physics results obtained in the Magnetic Reconnection Experiment (MRX) is given with an emphasis on the local features of magnetic reconnection in a controlled environment. Stable two-dimensional current sheets are formed and sustained by induction using two internal coils. The observed reconnection rates are found to be quantitatively consistent with a generalized Sweet-Parker model which incorporates compressibility, unbalanced upstream-downstream pressure, and the effective resistivity. The latter is significantly enhanced over its classical values in the low collisionality regime. Strong local ion heating is measured by an optical probe during the reconnection process, and at least half of the increased ion energy must be due to nonclassical processes, consistent with the resistivity enhancement. Characteristics of high-frequency electrostatic and electromagnetic fluctuations detected in the current sheet suggest presence of the lower-hybrid-drift-like waves with significant magnetic components. The detailed structures of the current sheet are measured and compared with Harris theory and two-fluid theory.

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720 Kilobytes pages

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INIS; OSTI as DE00786575

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  • Other Information: PBD: 11 Jun 2001

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  • Report No.: PPPL-3577
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/786575 | External Link
  • Office of Scientific & Technical Information Report Number: 786575
  • Archival Resource Key: ark:/67531/metadc722749

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 11, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 15, 2016, 9:55 p.m.

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Ji, Hantao; Carter, Troy; Hsu, Scott & Yamada, Masaaki. Study of Local Reconnection Physics in a Laboratory Plasma, report, June 11, 2001; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc722749/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.