Vanishing magnetic shear and electron transport barriers in the RFX-mod reversed field pinch.
Phys Rev Lett
; 106(2): 025001, 2011 Jan 14.
Article
em En
| MEDLINE
| ID: mdl-21405234
ABSTRACT
We define the safety factor q for the helical plasmas of the experiment RFX-mod by accounting for the actual three-dimensional nature of the magnetic flux surfaces. Such a profile is not monotonic but goes through a maximum located in the vicinity of the electron transport barriers measured by a high resolution Thomson scattering diagnostic. Helical states with a single axis obtained in viscoresistive magnetohydrodynamic numerical simulations exhibit similar nonmonotonic q profiles provided that the final states are preceded by a magnetic island phase, like in the experiment.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2011
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Article