Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas

Handle URI:
http://hdl.handle.net/10754/552788
Title:
Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas
Authors:
Loureiro, N. F.; Samtaney, Ravi ( 0000-0002-4702-6473 ) ; Schekochihin, A. A.; Uzdensky, D. A.
Abstract:
A numerical study of magnetic reconnection in the large-Lundquist-number (S), plasmoid-dominated regime is carried out for S up to 10 7. The theoretical model of Uzdensky [Phys. Rev. Lett. 105, 235002 (2010)] is confirmed and partially amended. The normalized reconnection rate is Ẽ eff ∼ 0.02 independently of S for S ≫ 10 4. The plasmoid flux (ψ) and half-width (w x) distribution functions scale as f (ψ) ∼ - ψ -2 and f (w x) ∼ w x -2. The joint distribution of ψ and w x shows that plasmoids populate a triangular region w x ≲ψ/B 0, where B 0 is the reconnecting field. It is argued that this feature is due to plasmoid coalescence. Macroscopic "monster" plasmoids with w x ∼ 10 % of the system size are shown to emerge in just a few Alfvén times, independently of S, suggesting that large disruptive events are an inevitable feature of large-S reconnection. © 2012 American Institute of Physics.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas 2012, 19 (4):042303 Physics of Plasmas
Journal:
Physics of Plasmas
Issue Date:
13-Apr-2012
DOI:
10.1063/1.3703318
Type:
Article
ISSN:
1070664X
Additional Links:
http://scitation.aip.org/content/aip/journal/pop/19/4/10.1063/1.3703318
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLoureiro, N. F.en
dc.contributor.authorSamtaney, Ravien
dc.contributor.authorSchekochihin, A. A.en
dc.contributor.authorUzdensky, D. A.en
dc.date.accessioned2015-05-14T07:20:41Zen
dc.date.available2015-05-14T07:20:41Zen
dc.date.issued2012-04-13en
dc.identifier.citationMagnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas 2012, 19 (4):042303 Physics of Plasmasen
dc.identifier.issn1070664Xen
dc.identifier.doi10.1063/1.3703318en
dc.identifier.urihttp://hdl.handle.net/10754/552788en
dc.description.abstractA numerical study of magnetic reconnection in the large-Lundquist-number (S), plasmoid-dominated regime is carried out for S up to 10 7. The theoretical model of Uzdensky [Phys. Rev. Lett. 105, 235002 (2010)] is confirmed and partially amended. The normalized reconnection rate is Ẽ eff ∼ 0.02 independently of S for S ≫ 10 4. The plasmoid flux (ψ) and half-width (w x) distribution functions scale as f (ψ) ∼ - ψ -2 and f (w x) ∼ w x -2. The joint distribution of ψ and w x shows that plasmoids populate a triangular region w x ≲ψ/B 0, where B 0 is the reconnecting field. It is argued that this feature is due to plasmoid coalescence. Macroscopic "monster" plasmoids with w x ∼ 10 % of the system size are shown to emerge in just a few Alfvén times, independently of S, suggesting that large disruptive events are an inevitable feature of large-S reconnection. © 2012 American Institute of Physics.en
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/pop/19/4/10.1063/1.3703318en
dc.rightsArchived with thanks to Physics of Plasmasen
dc.titleMagnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmasen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysics of Plasmasen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionAssociação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear—Laboratório Associado, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugalen
dc.contributor.institutionRudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP, United Kingdomen
dc.contributor.institutionCenter for Integrated Plasma Studies, University of Colorado, Boulder, Colorado 80309, USAen
kaust.authorSamtaney, Ravien
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