Experimental Study of Ion Heating and Acceleration During Magnetic Reconnection

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Ion heating and acceleration has been studied in the well-characterized reconnection layer of the Magnetic Reconnection Experiment [M. Yamada et al., Phys. Plasmas 4, 1936 (1997)]. Ion temperature in the layer rises substantially during null-helicity reconnection in which reconnecting field lines are anti-parallel. The plasma out flow is sub-Alfvonic due to a downstream back pressure. An ion energy balance calculation based on the data and including classical viscous heating indicates that the ions are heated largely due to non-classical mechanisms. The Ti rise is much smaller during co-helicity reconnection in which field lines reconnect obliquely. This is consistent with a ... continued below

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712 Kilobytes pages

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Hsu, S.C.; Carter, T.A.; Fiksel, G.; Ji, H.; Kulsrud, R.M. & Yamada, M. October 24, 2000.

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Ion heating and acceleration has been studied in the well-characterized reconnection layer of the Magnetic Reconnection Experiment [M. Yamada et al., Phys. Plasmas 4, 1936 (1997)]. Ion temperature in the layer rises substantially during null-helicity reconnection in which reconnecting field lines are anti-parallel. The plasma out flow is sub-Alfvonic due to a downstream back pressure. An ion energy balance calculation based on the data and including classical viscous heating indicates that the ions are heated largely due to non-classical mechanisms. The Ti rise is much smaller during co-helicity reconnection in which field lines reconnect obliquely. This is consistent with a slower reconnection rate and a smaller resistivity enhancement over the Spitzer value. These observations indicate strongly that non-classical dissipation mechanisms can play an important role both in heating the ions and in facilitating the reconnection process.

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712 Kilobytes pages

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INIS; OSTI as DE00766638

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  • Other Information: PBD: 24 Oct 2000

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  • Report No.: PPPL-3499
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/766638 | External Link
  • Office of Scientific & Technical Information Report Number: 766638
  • Archival Resource Key: ark:/67531/metadc720583

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  • October 24, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 15, 2016, 9:08 p.m.

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Hsu, S.C.; Carter, T.A.; Fiksel, G.; Ji, H.; Kulsrud, R.M. & Yamada, M. Experimental Study of Ion Heating and Acceleration During Magnetic Reconnection, report, October 24, 2000; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc720583/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.