skip to main content

Title: Improved method for calculating neoclassical transport coefficients in the banana regime

The conventional neoclassical moment method in the banana regime is improved by increasing the accuracy of approximation to the linearized Fokker-Planck collision operator. This improved method is formulated for a multiple ion plasma in general tokamak equilibria. The explicit computation in a model magnetic field shows that the neoclassical transport coefficients can be accurately calculated in the full range of aspect ratio by the improved method. The some neoclassical transport coefficients for the intermediate aspect ratio are found to appreciably deviate from those obtained by the conventional moment method. The differences between the transport coefficients with these two methods are up to about 20%.
Authors:
 [1]
  1. College of Industrial Technology, Nihon University, Narashino 275-8576 (Japan)
Publication Date:
OSTI Identifier:
22252827
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCURACY; ASPECT RATIO; BANANA REGIME; COLLISIONS; EQUILIBRIUM; FOKKER-PLANCK EQUATION; IONS; MAGNETIC FIELDS; MOMENTS METHOD; NEOCLASSICAL TRANSPORT THEORY; PLASMA; TOKAMAK DEVICES