Abrupt reduction of core electron heat transport in response to edge cooling on the Large Helical Device

S. Inagaki, N. Tamura, T. Tokuzawa, K. Ida, K. Itoh, S. V. Neudatchin, K. Tanaka, Y. Nagayama, K. Kawahata, M. Yakovlev, S. Sudo

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33 Citations (Scopus)

Abstract

Cold pulse inversion in a helical plasma is observed in the Large Helical Device (LHD) and thus the strong non-local effects are evident in the helical device as well as in tokamaks. A hydrogen pellet or tracer encapsulated solid pellet is injected into the edge of the LHD plasmas. A significant rise of the electron temperature is observed in the central region in response to the edge cooling. Transient analysis indicates a heat flux jump despite the absence of a change in the local temperature gradient. The non-local temperature rise takes place in the low density and high temperature regime just as predicted by the TFTR scaling.

Original languageEnglish
Pages (from-to)A251-A257
JournalPlasma Physics and Controlled Fusion
Volume48
Issue number5 A
DOIs
Publication statusPublished - May 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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