Abstract
This work presents a study of the particle transport through the edge of a plasma con ned in a tokamak. A model, with an in nite number of drift waves superposed to an equilibrium electrostatic potential, in addition to an uniform magnetic eld, is introduced, what puts the problem in the form of mappings. Two mappings are analysed, viz. the standard map and the standard non-twist map. Numerical results for the radial particle transport in the standard map are presented. For the standard non-twist map besides the transport analysis, a study of the manifolds of hyperbolic points and of the relation of their con guration with the transport is carried out, showing that the particle transport is changed when the manifold reconnection occurs.
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