Rotation characteristics of main ions and impurity ions in [ital H]-mode tokamak plasma

Journal Article · Mon Apr 04 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.2199· OSTI ID:5007326

Kim, J; Burrell, K H; Gohil, P; Groebner, R J; Kim, Y; John, H E; Seraydarian, R P; Wade, M R ^[1]

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1. General Atomics, San Diego,California 92186 (United States)

Poloidal and toroidal rotation of the main ions (He[sup 2+]) and the impurity ions (C[sup 6+] and B[sup 5+]) in [ital H]-mode helium plasmas have been measured via charge exchange recombination spectroscopy in the DIII-D tokamak. It was discovered that the main ion poloidal rotation is in the [ital ion] [ital diamagnetic] [ital drift] direction while the impurity ion rotation is in the [ital electron] [ital diamagnetic] [ital drift] direction, in qualitative agreement with the neoclassical theory. The deduced radial electric field in the edge is of the same negative-well shape regardless of which ion species is used, validating the fundamental nature of the electric field in [ital L]-[ital H] transition phenomenology.

• DOE Contract Number: AC03-89ER51114; AC05-84OR21400
• OSTI ID: 5007326
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:14; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320* -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
BORON IONS
CARBON IONS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CONFINEMENT
DATA
ELECTRIC FIELDS
EXPERIMENTAL DATA
H-MODE PLASMA CONFINEMENT
HELIUM IONS
IMPURITIES
INFORMATION
IONS
NUMERICAL DATA
PLASMA
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
RECOMBINATION
ROTATING PLASMA
SPECTROSCOPY
THERMONUCLEAR DEVICES
TOKAMAK DEVICES