Tomography of (2, 1) and (3, 2) magnetic island structures on Tokamak Fusion Test Reactor

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871534· OSTI ID:288873

Nagayama, Y ^[1]; Taylor, G; Fredrickson, E D; Budny, R V; Janos, A C; Mansfield, D K; McGuire, K M; Yamada, M ^[2]

---

1. National Institute for Fusion Science, Nagoya 464-01 (Japan)
2. Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

High-resolution electron cyclotron emission (ECE) image reconstruction has been used to observe ({ital m},{ital n})=(2,1) and (3, 2) island structures on Tokamak Fusion Test Reactor [Plasma Phys. Controlled. Fusion {bold 33}, 1509 (1991)], where {ital m} and {ital n} are the poloidal and the toroidal mode number, respectively. The observed island structure is compared with other diagnostics, such as soft x-ray tomography and magnetic measurements. A cold elliptic island is observed after lithium pellet injection. Evidence for the enhancement of the heat transfer due to the island is observed. A relaxation phenomenon due to the {ital m}=2 mode is newly observed in Ohmic plasmas. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Princeton Plasma Physics Laboratory
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 288873
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 7 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
MAGNETIC ISLANDS
MAGNETOHYDRODYNAMICS
PLASMA DIAGNOSTICS
TFTR TOKAMAK
TOMOGRAPHY
X-RAY EMISSION ANALYSIS