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Effects of the resonant modes on the magnetic footprint patterns in a tokamak wall
2006
Physics of Plasmas
Magnetic footprints, or deposition patterns of chaotic magnetic field lines in a tokamak wall, are studied for a configuration with resonant modes due to an ergodic limiter. The formation of magnetic footprints using a nontwist symplectic mapping for a nonmonotonic safety factor radial profile is investigated numerically. The radial position of the resonant mode we focus on changes drastically the magnetic footprints. Deeper resonant modes produce a concentrated field line deposition pattern,
doi:10.1063/1.2186047
fatcat:qyo4qu7gorgvnbedkkjnmehiim