Observation of z-dependent impurity accumulation in the PBX tokamak

Journal Article · Mon Jan 12 00:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.116· OSTI ID:6748818

Ida, K; Fonck, R J; Sesnic, S; Hulse, R A; LeBlanc, B

Charge-dependent convective impurity transport is observed in the central core of PBX H-mode discharges by measurement of radial profiles for both low- and high-Z intrinsic impurities in the presence of strong sawtooth activity. The time-evolving Z/sub eff/ profile and central metallic densities are modeled to yield a diffuison coefficient and a Z-dependent inward convective pinch which are in general agreement with estimates of neoclassical transport in the central plasma region.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• OSTI ID: 6748818
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 58:2
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
IMPURITIES
DIFFUSION
PBX DEVICES
PLASMA DIAGNOSTICS
PLASMA
ELECTRIC CHARGES
EXPERIMENTAL DATA
MATHEMATICAL MODELS
RECOMBINATION
THOMSON SCATTERING
CLOSED PLASMA DEVICES
DATA
INELASTIC SCATTERING
INFORMATION
NUMERICAL DATA
SCATTERING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700102* - Fusion Energy- Plasma Research- Diagnostics