Particle diffusion in a spheromak

Journal Article · Sun Mar 06 23:00:00 EST 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.933· OSTI ID:5264018

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

The local carbon particle diffusion coefficient was measured in the Proto S-1/C spheromak with use of 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 5 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 of the discharge when the plasma was in the Taylor state, the diffusion coefficient of the carbon was classical.

• Research Organization: Princeton Plasma Physics Laboratory, Princeton University, James Forrestal Campus, Princeton, New Jersey 08544
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5264018
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:10; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
BEAM INJECTION
CARBON
CLASSICAL MECHANICS
CLOSED PLASMA DEVICES
CONFINEMENT
CORRELATION FUNCTIONS
DIFFUSION
ELECTRIC FIELDS
ELEMENTS
FUNCTIONS
MECHANICS
NEUTRAL ATOM BEAM INJECTION
NONMETALS
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA PRESSURE
PROBES
SPHEROMAK DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES