14 research outputs found
A three-dimensional magnetohydrodynamic equilibrium in an axial coordinate with a constant curvature
Cancellation of drift kinetic effects between thermal and energetic particles on the resistive wall mode stabilization
Experimental tests of paleoclassical transport
Abstract Predictions of the recently developed paleoclassical transport model are compared with data from many toroidal plasma experiments: electron heat diffusivity in DIII-D, C-Mod and NSTX ohmic and near-ohmic plasmas; transport modelling of DIII-D ohmic-level discharges and of the RTP ECH 'stair-step' experiments with electron internal transport barriers (eITBs) at low order rational surfaces; investigation of a strong eITB in JT-60U; H-mode T e edge pedestal properties in DIII-D; and electron heat diffusivities in non-tokamak experiments (NSTX/ST, MST/RFP, SSPX/spheromak). The radial electron heat transport predicted by the paleoclassical model is found to be in reasonable agreement with a wide variety of ohmic-level experimental results and to set the lower limit (within a factor 2 in tokamaks) on the radial electron heat transport in most resistive, current-carrying toroidal plasmas-for T e T crit e B 2/3ā1/2 keV where it is expected to be dominant over fluctuation-induced anomalous transport that scales with a gyro-Bohm diffusion coefficient