Measurements of radial profiles of He sup 2+ transport coefficients on TFTR (Tokamak Fusion Test Reactor)

Technical Report · Fri Jun 01 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/7093024· OSTI ID:7093024

Synakowski, E J; Stratton, B C; Efthimion, P C; Hulse, R A; Johnson, D W; Mansfield, D K; Park, H; Scott, S D; Taylor, G ^[1]; Fonck, R J ^[2]

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1. Princeton Univ., NJ (USA). Plasma Physics Lab.
2. Wisconsin Univ., Madison, WI (USA). Dept. of Nuclear Engineering and Engineering Physics

Measurements of the spatial structure of the transport coefficients of He{sup 2+} on the Tokamak Fusion Test Reactor is reported. He{sup 2+} profiles were measured using charge exchange spectroscopy after a helium puff into corotating L-mode plasmas. Modelling shows that the He{sup 2+} diffusivity is about 10 m{sup 2}/s near the plasma edge and drops to below 1 m{sup 2}/s inside of the q = 1 surface. The convective velocity ranges from 1--3 m/s near q = 1 to 20--40 m/s near the edge. The helium diffusivity is on the order of the ion momentum and thermal diffusivity and is greater that than the electron thermal diffusivity. 4 refs., 4 figs.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7093024
• Report Number(s): PPPL-2700; ON: DE90012018; TRN: 90-020187
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HELIUM ASH
THERMAL DIFFUSIVITY
TFTR TOKAMAK
CHARGED-PARTICLE TRANSPORT
CHARGE DENSITY
CHARGE EXCHANGE
CONTINUITY EQUATIONS
EXPERIMENTAL DATA
HELIUM IONS
CHARGED PARTICLES
DATA
DIFFERENTIAL EQUATIONS
EQUATIONS
INFORMATION
IONS
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
RADIATION TRANSPORT
THERMODYNAMIC PROPERTIES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700103* - Fusion Energy- Plasma Research- Kinetics