Abstract
Nonlinear three-dimensional electromagnetic simulations are employed to study the dynamics of edge localized modes (ELMs) driven by intermediate wavelength peeling-ballooning modes. It is found that the early behavior of the modes is similar to expectations from linear, ideal peeling-ballooning mode theory, with the modes growing linearly at a fraction of the Alfv́n frequency. In the nonlinear phase, the modes grow explosively, forming a number of extended filaments which propagate rapidly from the outer closed flux region into the open flux region toward the outboard wall. Similarities to nonlinear ballooning theory as well as additional complexities are observed. Comparison to observations reveals a number of similarities. Implications of the simulations and proposals for the dynamics of the full ELM crash are discussed.
Original language | English |
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Article number | 056115 |
Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Physics of Plasmas |
Volume | 12 |
Issue number | 5 |
DOIs | |
State | Published - May 2005 |
Externally published | Yes |
Funding
This is a report of work supported by the U.S. Department of Energy under Contract No. DE-FG03-95ER54309 at General Atomics and Contract No. W-7405-ENG-48 at University of California Lawrence Livermore National Laboratory, and supported in part by the United Kingdom Engineering and Physical Sciences Research Council and EURATOM.
Funders | Funder number |
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U.S. Department of Energy | DE-FG03-95ER54309, W-7405-ENG-48 |
H2020 Euratom | |
Engineering and Physical Sciences Research Council |