Reduced Heat Transport between Edge-Localized-Mode Bursts at Low Collisionality and Small Poloidal Larmor Radius

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.035003· OSTI ID:20696454

Urano, H; Takizuka, T; Kamada, Y; Oyama, N; Takenaga, H; Miura, Y ^[1]

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1. Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, Naka 319-0193 (Japan)

Nondimensional parameter dependence of heat transport between edge localized modes (ELMs) is examined for H mode plasmas. The electron heat diffusivity between ELMs is reduced to the level of ion neoclassical transport in the plasma edge region which is affected by ELM burst. At lower edge collisionality, the heat flux assigned to the heat transport between ELMs is reduced and the ELM loss power is enhanced. During the inter-ELM phase, the energy confinement time becomes larger with decreasing the edge collisionality and poloidal Larmor radius.

• OSTI ID: 20696454
• Journal Information: Physical Review Letters, Vol. 95, Issue 3; Other Information: DOI: 10.1103/PhysRevLett.95.035003; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOUNDARY LAYERS
CONFINEMENT TIME
EDGE LOCALIZED MODES
ELECTRONS
H-MODE PLASMA CONFINEMENT
HEAT FLUX
HEAT TRANSFER
LARMOR RADIUS
NEOCLASSICAL TRANSPORT THEORY
PLASMA