Particle diffusion in a spheromak

Technical Report · Fri Jan 01 00:00:00 EST 1988

DOI:https://doi.org/10.2172/7171521· OSTI ID:7171521

Meyerhofer, D D; Levinton, F M; Yamada, M

The local carbon particle diffusion coefficient was measured in the Proto S-1/C spheromak using a test particle injection scheme. When the plasma was not in a force-free Taylor state, and when there were pressure gradients in the plasma, the particle diffusion was five times that predicted by Bohm and was consistent with collisional drift wave diffusion. The diffusion appears to be driven by correlations of the fluctuating electric field and density. During the decay phase of the discharge when the plasma was in the Taylor state, the diffusion coefficient of the carbon was classical. 23 refs., 4 figs.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7171521
• Report Number(s): PPPL-2489; ON: DE88009350
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
SPHEROMAK DEVICES
DIFFUSION
CONFINEMENT TIME
ELECTRON DENSITY
MAGNETIC FIELDS
PRESSURE GRADIENTS
CLOSED PLASMA DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700103* - Fusion Energy- Plasma Research- Kinetics