Spatial and Temporal Structure of Edge-Localized Modes

Spatial and Temporal Structure of Edge-Localized Modes

Spatial and Temporal Structure of Edge-Localized Modes 150 150 Mathew

This Letter provides information on the spatial and temporal structure of periodic eruptions observed in magnetically confined laboratory fusion plasmas, called edge-localized modes (ELMs), and highlights similarities with solar eruptions. Taken together, the observations presented in this Letter provide strong evidence for ELMs being associated with a filamentlike structure. These filaments are extended along a field line, are generated on a 100 s time scale, erupt from the outboard side, and connect back into the plasma. Such structures are predicted by a theoretical model based on the ‘‘ballooning’’ instability, developed for both solar and tokamak applications.

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18/06/2004