dorsal/arxiv
View SchemaNoble internal transport barriers and radial subdiffusion of toroidal magnetic lines
| Authors | J. H. Misguich, J. D. Reuss, D. Constantinecu, Gy. Steinbrecher, M. Vlad, F. Spineanu, B. Weyssow, R. Balescu |
|---|---|
| Categories | |
| ArXiv ID | physics/0206001 |
| URL | https://arxiv.org/abs/physics/0206001 |
| DOI | 10.1051/anphys:2004001 |
Abstract
Single trajectories of magnetic line motion indicate the persistence of a central protected plasma core, surrounded by a chaotic shell enclosed in a double-sided transport barrier : the latter is identified as being composed of two Cantori located on two successive "most-noble" numbers values of the perturbed safety factor, and forming an internal transport barrier (ITB). Magnetic lines which succeed to escape across this barrier begin to wander in a wide chaotic sea extending up to a very robust barrier (as long as L<1) which is identified mathematically as a robust KAM surface at the plasma edge. In this case the motion is shown to be intermittent, with long stages of pseudo-trapping in the chaotic shell, or of sticking around island remnants, as expected for a continuous time random walk.
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"abstract": "Single trajectories of magnetic line motion indicate the persistence of a\ncentral protected plasma core, surrounded by a chaotic shell enclosed in a\ndouble-sided transport barrier : the latter is identified as being composed of\ntwo Cantori located on two successive \"most-noble\" numbers values of the\nperturbed safety factor, and forming an internal transport barrier (ITB).\nMagnetic lines which succeed to escape across this barrier begin to wander in a\nwide chaotic sea extending up to a very robust barrier (as long as L\u003c1) which\nis identified mathematically as a robust KAM surface at the plasma edge. In\nthis case the motion is shown to be intermittent, with long stages of\npseudo-trapping in the chaotic shell, or of sticking around island remnants, as\nexpected for a continuous time random walk.",
"arxiv_id": "physics/0206001",
"authors": [
"J. H. Misguich",
"J. D. Reuss",
"D. Constantinecu",
"Gy. Steinbrecher",
"M. Vlad",
"F. Spineanu",
"B. Weyssow",
"R. Balescu"
],
"categories": [
"physics.plasm-ph",
"nlin.CD"
],
"doi": "10.1051/anphys:2004001",
"title": "Noble internal transport barriers and radial subdiffusion of toroidal magnetic lines",
"url": "https://arxiv.org/abs/physics/0206001"
},
"schema_id": "dorsal/arxiv",
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