Open AccessPARTICLE TRANSPORT FROM TURBULENCE DRIVEN BY-PARALLEL VELOCITY SHEAR
Author(s) -
Fu Xin-Yu,
J. Q. Dong,
Ying Chun-Tong,
Guangjun Liu
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.474
Subject(s) - turbulence , plasma , physics , ion , tokamak , shear flow , shear (geology) , pinch , magnetic field , mechanics , reversed field pinch , diffusion , density gradient , impurity , atomic physics , materials science , magnetohydrodynamics , thermodynamics , nuclear physics , quantum mechanics , composite material
The turbulence driven by ion temperature gradient,mass flow shear,parallel to the magnetic field,and the impurity ion density gradient in plasmas with multiple ion species is studied in a sheared slab magnetic configuration.The particle diffusion induced by the turbulence is obtained with quasi-linear fluid theory.The possible inward ‘pinch' of the majority ions and the inward flow of the impurity ions,depending on plasma parameters,are both calculated,and the corresponding diffusion coefficients are given.It is shown that the increase of parallel velocity shear may have benificial effects on plasma confinement.The correlations with Tokamak experimental observations are discussed.