Observation of Reduced Heat Transport inside the Magnetic Island O Point in the Large Helical Device

S. Inagaki, N. Tamura, K. Ida, Y. Nagayama, K. Kawahata, S. Sudo, T. Morisaki, K. Tanaka, T. Tokuzawa

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Abstract

Evidence for a reduction of heat transport inside the magnetic island O point is observed from the propagation of a cold pulse produced by a tracer encapsulated solid pellet in the Large Helical Device. A small peak and slow propagation of the cold pulse are observed inside the island. A significant result is that electron heat diffusivity inside the island is estimated to be [Formula presented] which is smaller than that outside the island by an order of magnitude.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume92
Issue number5
DOIs
Publication statusPublished - Jan 1 2004
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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