Heat transport in the quasi-single-helicity islands of EXTRAP T2R

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3081551· OSTI ID:21274179

Frassinetti, L; Brunsell, P R; Drake, J ^[1]

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1. Division of Fusion Plasma Physics, Association EURATOM-VR, Alfven Laboratory, School of Electrical Engineering, Royal Institute of Technology KTH, SE-10044 Stockholm (Sweden)

The heat transport inside the magnetic island generated in a quasi-single-helicity regime of a reversed-field pinch device is studied by using a numerical code that simulates the electron temperature and the soft x-ray emissivity. The heat diffusivity {chi}{sub e} inside the island is determined by matching the simulated signals with the experimental ones. Inside the island, {chi}{sub e} turns out to be from one to two orders of magnitude lower than the diffusivity in the surrounding plasma, where the magnetic field is stochastic. Furthermore, the heat transport properties inside the island are studied in correlation with the plasma current and with the amplitude of the magnetic fluctuations.

• OSTI ID: 21274179
• Journal Information: Physics of Plasmas, Vol. 16, Issue 3; Other Information: DOI: 10.1063/1.3081551; (c) 2009 American Institute of Physics; 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
CORRELATIONS
ELECTRIC CURRENTS
ELECTRON TEMPERATURE
HEAT TRANSFER
HELICITY
MAGNETIC ISLANDS
PLASMA
REVERSED-FIELD PINCH DEVICES
SOFT X RADIATION