Spatial and temporal structure of edge-localized modes

A. Kirk, H. R. Wilson, G. F. Counsell, R. Akers, E. Arends, S. C. Cowley, J. Dowling, B. Lloyd, M. Price, M. Walsh, Mast Team

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Abstract

The periodic eruptions in magnetically confined edge-localized modes (ELM) were investigated to study the spatial and temporal structures. The cool deuterium atoms at the plasma periphery and those released from the target by recycling were excited through collisions with the expelled plasma. The consequent burst of Balmer α-series light together with the detection of heat and particles arriving at the divertor target plates, are characteristic signatures of the ELM events. The results show that the ELM process is not only up-down symmetric but also that it is extended in the poloidal direction.

Original languageEnglish (US)
Article number250402
Pages (from-to)245002-1-245002-4
JournalPhysical review letters
Volume92
Issue number24
DOIs
StatePublished - Jun 18 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Kirk, A., Wilson, H. R., Counsell, G. F., Akers, R., Arends, E., Cowley, S. C., Dowling, J., Lloyd, B., Price, M., Walsh, M., & Team, M. (2004). Spatial and temporal structure of edge-localized modes. Physical review letters, 92(24), 245002-1-245002-4. [250402]. https://doi.org/10.1103/PhysRevLett.92.245002