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The plasma boundary in Single Helical Axis RFP plasmas
- Source :
- Nuclear fusion 50 (2010): 035014. doi:10.1088/0029-5515/50/3/035014, info:cnr-pdr/source/autori:Martines E.; Lorenzini R.; Momo B.; Munaretto S.; Innocente P.; Spolaore M./titolo:The plasma boundary in single helical axis RFP plasmas/doi:10.1088%2F0029-5515%2F50%2F3%2F035014/rivista:Nuclear fusion/anno:2010/pagina_da:035014/pagina_a:/intervallo_pagine:035014/volume:50
- Publication Year :
- 2009
-
Abstract
- Single Helical Axis (SHAx) states obtained in high current reversed field pinch (RFP) plasmas display, aside from a dominant mode in the m=1 spectrum, also a dominant m=0 mode, with the same toroidal mode number as the m=1 one. The two modes have a fixed phase relationship. The island chain created by the m=0 mode across the reversal surface gives rise, at shallow reversal of the toroidal field, to an X-point structure which separates the last closed flux surface from the first wall, creating a divertor-like configuration. The plasma-wall interaction is found to be related to the connection length of the field lines intercepting the wall, which displays a pattern modulated by the dominant mode toroidal periodicity. This configuration, which occurs only for shallow toroidal field reversal, could be exploited to realize an island divertor in analogy to stellarators.<br />12 pages, 9 figures Submitted to Nuclear Fusion
- Subjects :
- Physics
plasma boundary
Nuclear and High Energy Physics
Toroid
Reversed field pinch
Field line
Divertor
Flux
Magnetic confinement fusion
FOS: Physical sciences
Plasma
reversed field pinch
Condensed Matter Physics
Physics - Plasma Physics
law.invention
Plasma Physics (physics.plasm-ph)
quasi-single helicity
law
Physics::Plasma Physics
RFP
QSH
Atomic physics
Stellarator
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nuclear fusion 50 (2010): 035014. doi:10.1088/0029-5515/50/3/035014, info:cnr-pdr/source/autori:Martines E.; Lorenzini R.; Momo B.; Munaretto S.; Innocente P.; Spolaore M./titolo:The plasma boundary in single helical axis RFP plasmas/doi:10.1088%2F0029-5515%2F50%2F3%2F035014/rivista:Nuclear fusion/anno:2010/pagina_da:035014/pagina_a:/intervallo_pagine:035014/volume:50
- Accession number :
- edsair.doi.dedup.....2abd625b6f2e13c8a145050b017e0532
- Full Text :
- https://doi.org/10.1088/0029-5515/50/3/035014