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VOLUME 52 (1990) | ISSUE 4 | PAGE 848
Two-dimensional diffusion in system with shear
The field shear is taken into account in a study of the transport of test particles as a result of fluctuations with a 2D structure in magnetic confinement systems. An analytic study is carried out on the basis of percolation theory, and numerical calculations are also carried out. The diffusion coefficient and the growth rate of the divergence of close orbits are calculated. Despite the presence of a shear potential, the percolation approach can be taken in analyzing diffusion in such systems.