Three-dimensional, Impulsive Magnetic Reconnection in a Laboratory Plasma

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Impulsive, local, 3-D reconnection is identified for the first time in a laboratory current sheet. The events observed in the Magnetic Reconnection Experiment (MRX) are characterized by large local gradients in the third direction and cannot be explained by 2-D models. Detailed measurements show that the ejection of flux rope structures from the current sheet plays a key role in these events. By contrast, even though electromagnetic fluctuations in the lower hybrid frequency range are also observed concurrently with the impulsive behavior, they are not the key physics responsible. A qualitative, 3-D, two-fluid model is proposed to explain the observations. ... continued below

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S Dorfman, et al May 3, 2013.

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Description

Impulsive, local, 3-D reconnection is identified for the first time in a laboratory current sheet. The events observed in the Magnetic Reconnection Experiment (MRX) are characterized by large local gradients in the third direction and cannot be explained by 2-D models. Detailed measurements show that the ejection of flux rope structures from the current sheet plays a key role in these events. By contrast, even though electromagnetic fluctuations in the lower hybrid frequency range are also observed concurrently with the impulsive behavior, they are not the key physics responsible. A qualitative, 3-D, two-fluid model is proposed to explain the observations. The experimental results may be particularly applicable to space and astrophysical plasmas where impulsive reconnection occurs.

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  • Geophysical Reesearch Letters (November 2012)

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  • Report No.: PPPL-4873
  • Grant Number: DE-ACO2-09CH11466
  • DOI: 10.2172/1090586 | External Link
  • Office of Scientific & Technical Information Report Number: 1090586
  • Archival Resource Key: ark:/67531/metadc842749

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Creation Date

  • May 3, 2013

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • July 18, 2016, 5:30 p.m.

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S Dorfman, et al. Three-dimensional, Impulsive Magnetic Reconnection in a Laboratory Plasma, report, May 3, 2013; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc842749/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.