Observation of reduced heat transport inside the magnetic island O point in the large helical device

Observation of reduced heat transport inside the magnetic island O point in the large helical device

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...

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Veröffentlicht in:Physical review letters 2004-02, Vol.92 (5), p.055002-055002, Article 055002
Hauptverfasser: Inagaki, S, Tamura, N, Ida, K, Nagayama, Y, Kawahata, K, Sudo, S, Morisaki, T, Tanaka, K, Tokuzawa, T
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container_end_page 055002
container_issue 5
container_start_page 055002
container_title Physical review letters
container_volume 92
creator Inagaki, S
Tamura, N
Ida, K
Nagayama, Y
Kawahata, K
Sudo, S
Morisaki, T
Tanaka, K
Tokuzawa, T
description 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 0.2 m(2)/s which is smaller than that outside the island by an order of magnitude.
doi_str_mv 10.1103/physrevlett.92.055002
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title Observation of reduced heat transport inside the magnetic island O point in the large helical device
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