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Title: Hysteresis Relation between Turbulence and Temperature Modulation during the Heat Pulse Propagation into a Magnetic Island in DIII-D

Here, the hysteresis relation between turbulence and temperature modulation during the heat pulse propagation into a magnetic island is studied for the first time in toroidal plasmas. Lissajous curves of the density fluctuation ($$\sim\atop{n}$$/n) and the electron temperature (T e) modulation show that the ($$\sim\atop{n}$$/n) propagation is faster than the heat pulse propagation near the O-point of the magnetic island. This faster $$\sim\atop{n}$$/n propagation is an experimental evidence of the turbulence spreading from X-point to the O-point of the magnetic island.
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. National Inst. of Natural Sciences (NINS), Toki (Japan). National Inst. for Fusion Science (NIFS); Graduate Univ. for Advanced Studies (SOKENDAI), Toki (Japan)
  2. National Inst. for Quantum and Radiological Science and Technology (QST), Naka (Japan)
  3. General Atomics, San Diego, CA (United States)
  4. Univ. of Wisconsin, Madison, WI (United States)
  5. Univ. of Texas, Austin, TX (United States)
Publication Date:
Grant/Contract Number:
FC02-04ER54698; JP15H02336; KEIN1111; KEIN1113; FG03-97ER54415; AC05-00OR22725
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 24; Journal ID: ISSN 0031-9007
American Physical Society (APS)
Research Org:
General Atomics, San Diego, CA (United States). DIII-D National Fusion Facility (DIII-D)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); Japan Society for the Promotion of Science (JSPS)
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; magnetic confinement fusion; magnetic reconnection; plasma turbulence
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1441255