Results 1 to 10 of about 41,383 (128)
On neoclassical impurity transport in stellarator geometry [PDF]
Plasma Physics and Controlled Fusion, 2013 The impurity dynamics in stellarators has become an issue of moderate concern due to the inherent tendency of the impurities to accumulate in the core when the neoclassical ambipolar radial electric field points radially inwards (ion root regime).
Beidler C D +14 more
core +4 more sources
Rotation and Neoclassical Ripple Transport in ITER [PDF]
Nuclear Fusion, 2017 Neoclassical transport in the presence of non-axisymmetric magnetic fields causes a toroidal torque known as neoclassical toroidal viscosity (NTV). The toroidal symmetry of ITER will be broken by the finite number of toroidal field coils and by test ...
Dorland, W. +5 more
core +3 more sources
Lagrangian formulation of neoclassical transport theory [PDF]
The Physics of Fluids, 1981 Neoclassical transport theory is developed in a Lagrangian formulation in contrast to the usual Eulerian development. The Lagrangian formulation is constructed from the three actions: magnetic moment, parallel invariant, and bounce-averaged poloidal flux.
Bernstein, I.B., Molvig, K.
core +3 more sources
Neoclassical transport in stellarators [PDF]
The Physics of Fluids, 1987 The stellarator neoclassical transport caused by particles trapped in local helical wells is calculated in the low-collisionality regime using a systematic expansion. The behavior of electron transport is found to be the same over a wide range of energies but the behavior of ion transport for low-energy ions is found to be different than that for high ...
Ho, Darwin D.-M., Kulsrud, Russell M.
openaire +3 more sources
The importance of the classical channel in the impurity transport of optimized stellarators [PDF]
, 2019 In toroidal magnetic confinement devices, such as tokamaks and stellarators, neoclassical transport is usually an order of magnitude larger than its classical counterpart.
Buller, S. +4 more
core +2 more sources
Neoclassical transport simulations for stellarators [PDF]
Physics of Plasmas, 2011 The benchmarking of the thermal neoclassical transport coefficients is described using examples of the Large Helical Device (LHD) and TJ-II stellarators. The thermal coefficients are evaluated by energy convolution of the monoenergetic coefficients obtained by direct interpolation or neural network techniques from the databases precalculated by ...
Turkin, Y. +5 more
openaire +3 more sources
Neoclassical resonant transport of a mirror cell [PDF]
, 2005 The neoclassical resonant plateau transport in a mirror cell is studied theoretically. The analytical expression for a non-square-well magnetic field is obtained. The analytical result is applied to the GAMMA10 tandem mirror [T. Cho, M.
Ito T., Katanuma I., 片沼 伊佐夫
core +1 more source
Neoclassical Transport Including Collisional Nonlinearity
Physical Review Letters, 2011 In the standard δf theory of neoclassical transport, the zeroth-order (Maxwellian) solution is obtained analytically via the solution of a nonlinear equation. The first-order correction δf is subsequently computed as the solution of a linear, inhomogeneous equation that includes the linearized Fokker-Planck collision operator.
J, Candy, E A, Belli
openaire +3 more sources
L-H transition dynamics in fluid turbulence simulations with neoclassical force balance [PDF]
, 2013 Spontaneous transport barrier generation at the edge of a magnetically confined plasma is investigated. To this end, a model of electrostatic turbulence in three-dimensional geometry is extended to account for the impact of friction between trapped and ...
C. Bourdelle +6 more
core +5 more sources
Neoclassical transport in helically symmetric plasmas [PDF]
The Physics of Fluids, 1981 The neoclassical rate of diffusion is calculated in such a way that the result is applicable to both helically symmetric and toroidally symmetric plasmas.
Pytte, A., Boozer, Allen H.
openaire +4 more sources