2006•Unpublished venueOpen access

Stochastization as a possible explanation for some fast MHD phenomena in ASDEX Upgrade

V. Igochine, O. Dumbrajs, D. Constantinescu, H. Zohm, Guntars Zvejnieks

Abstract

The role of stochastization of magnetic field lines is analyzed in fast reconnection phenomena occurring in magnetized fusion plasma during various conditions in the ASDEX Upgrade tokamak. The mapping technique [1,2] is applied to trace the field lines of toroidally confined plasma where perturbation parameters are expressed in terms of experimental perturbation amplitudes determined from the ASDEX Upgrade tokamak. In this formalism the equations for magnetic field lines take the Hamiltonian form

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Available abstract

Key concepts: ASDEX Upgrade, Tokamak, Magnetohydrodynamics, Plasma, Field line, Physics, Magnetic field, Perturbation (astronomy)