Phase-space jets drive transport and anomalous resistivity

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4902525· OSTI ID:22403263

Diamond, P. H. ^[1]; Kosuga, Y. ^[2]

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1. WCI Center for Fusion Theory, NFRI, Gwahangno 113, Daejeon 305-333 (Korea, Republic of)
2. Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga Koen, Kasuga 816-8580 (Japan)

In the presence of wave dissipation, phase-space structures spontaneously emerge in nonlinear Vlasov dynamics. These structures include not only well-known self-trapped vortices (holes) but also elongated filaments, resembling jets, as reported in this work. These jets are formed by straining due to interacting holes. Jets are highly anisotropic, and connect low and high velocity regions over a range larger than the electron thermal velocity. Jets survive long enough for particles to scatter between low and high phase-space density regions. Jets are found to contribute significantly to electron redistribution, velocity-space transport, and anomalous resistivity.

• OSTI ID: 22403263
• Journal Information: Physics of Plasmas, Vol. 21, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRONS
HOLES
JETS
NONLINEAR PROBLEMS
PHASE SPACE
STRAINS
TRAPPING
VELOCITY
VORTICES