Published July 2008 | Version v1
Journal article Metadata-only

Core electron temperature rise due to Ar gas-puff in EC-heated LHD plasmas

Creators

  • 1. National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu 509-5292 (Japan)
  • 2. Research Institute for Applied Mechanics, Kyushyu University, 6-1, Kasuga-Koen, Kasuga, Fukuoka 816-8580 (Japan)
  • 3. Center for Atomic and Molecular Technologies, Osaka Univeristy, 2-1, Yamadaoka, Suita, Osaka (Japan)

Description

A rise of the core electron temperature Te in response to a controlled Ar gas-puff is observed in electron cyclotron heated plasmas of the Large Helical Device. The increase in core Te is about 1 keV after the Ar gas-puff. Since density peaking does not take place after the Ar gas-puff, this phenomenon is different from radiatively improved mode. Transient response analysis shows that a close similarity in the relationship between the electron heat flux and the Te gradient appears between the core Te rise after the Ar gas-puff and that due to the nonlocal effect induced by a pellet injection. Thus non-locality in the electron heat transport is essential for the core Te rise after the Ar gas-puff

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/123/1/012023

Additional details

Identifiers

DOI
10.1088/1742-6596/123/1/012023;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
123
Journal Issue
1
Journal Page Range
[7 p.]
ISSN
1742-6596

Conference

Title
11. IAEA technical meeting on H-mode physics and transport barriers
Dates
26-28 Sep 2007
Place
Tsukuba (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40048784
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ARGON; ECR HEATING; ELECTRON TEMPERATURE; ELECTRONS; HEAT FLUX; HEAT TRANSFER; KEV RANGE; LHD DEVICE; PELLET INJECTION; PLASMA; TRANSIENTS
Descriptors DEC
CLOSED PLASMA DEVICES; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; ENERGY TRANSFER; FERMIONS; FLUIDS; GASES; HEATING; HIGH-FREQUENCY HEATING; LEPTONS; NONMETALS; PLASMA HEATING; RARE GASES; THERMONUCLEAR DEVICES

Optional Information

Collaborations
LHD Team