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Collisional effects in the tokamap |
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| Authors: | AB SchelinIL Caldas RL Viana S Benkadda |
| Institution: | a Departamento de Física, Universidade Tecnológica Federal do Paraná, 80230-901, Curitiba, Paraná, Brazil b Instituto de Física, Universidade de São Paulo, 5315-970, São Paulo, São Paulo, Brazil c Departamento de Física, Universidade Federal do Paraná, 81531-990, Curitiba, Paraná, Brazil d International Institute for Fusion Science, CNRS-Université de Provence, Centre de St. Jérôme, Case 321, 13397 Marseille, France |
| Abstract: | Plasmas confined in tokamaks with non-symmetric perturbations are surrounded by a chaotic layer of magnetic field lines that guide charged particles to the tokamak wall. We use an analytical two-dimensional symplectic mapping to study the resulting fractal patterns of field line escape. However, particles may experience several collisions before escaping toward the tokamaks wall. We add a random collisional term to the field line mapping to investigate how the particle collisions modify their escape patterns. |
| Keywords: | Symplectic maps Chaotic magnetic field lines Tokamap |
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