Interacting filamentary eruptions in magnetised plasmas

S. A. Henneberg, S. C. Cowley, H. R. Wilson

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The interaction between multiple filamentary plasma eruptions is investigated by modelling the non-linear ideal MHD ballooning mode envelope equation with a mixed Eulerian and Lagrangian characterisation of the boundary conditions. The study of multiple plasma filaments is performed in a specific slab equilibrium susceptible to Rayleigh-Taylor instabilities. If the unstable system is initiated with three equal sized filaments, they erupt at the same rate, independently of each other, even in the non-linear regime. However, if one is initiated very slightly larger than the other two it causes a down-draft as it erupts upwards, which suppresses the smaller filaments. This suggests that those filaments which first enter the non-linear regime will dominate the plasma eruption dynamics.

Original languageEnglish (US)
Article number125010
JournalPlasma Physics and Controlled Fusion
Volume57
Issue number12
DOIs
StatePublished - Nov 3 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Keywords

  • ELM
  • ballooning
  • eruptions
  • filamentary
  • filaments
  • ideal MHD
  • non-linear

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