TY - JOUR
T1 - Formation and structure of internal and edge transport barriers
AU - Synakowski, E. J.
PY - 1998
Y1 - 1998
N2 - The phenomenology of transport barrier formation is reviewed with a focus on physics that may be common to the edge and the core. To this end, the framework of E × B velocity shear reduction of turbulence-induced fluxes, applied to the edge for some time, is studied in the light of measurements of core bifurcation dynamics and recent tests of causality. Also, the possible role of the magnetic shear structure in facilitating core barrier formation is examined. Experimental and theoretical challenges for developing a predictive capability for reactor-relevant conditions are highlighted by recent observations of spontaneous electric field shear generation far removed from edge effects, and efforts to characterize the plasma edge at and across the L-H transition.
AB - The phenomenology of transport barrier formation is reviewed with a focus on physics that may be common to the edge and the core. To this end, the framework of E × B velocity shear reduction of turbulence-induced fluxes, applied to the edge for some time, is studied in the light of measurements of core bifurcation dynamics and recent tests of causality. Also, the possible role of the magnetic shear structure in facilitating core barrier formation is examined. Experimental and theoretical challenges for developing a predictive capability for reactor-relevant conditions are highlighted by recent observations of spontaneous electric field shear generation far removed from edge effects, and efforts to characterize the plasma edge at and across the L-H transition.
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U2 - 10.1088/0741-3335/40/5/006
DO - 10.1088/0741-3335/40/5/006
M3 - Article
AN - SCOPUS:0032074530
SN - 0741-3335
VL - 40
SP - 581
EP - 596
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
IS - 5
ER -