Low-frequency magnetic fluctuation measurement during magnetic reconnection in counter-helicity plasma merging experiment

Akihiro Kuwahata, Hiroshi Tanabe, Shingo Ito, Michiaki Inomoto, Yasushi Ono

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic fluctuations with frequency lower than the local ion cyclotron frequency was observed associated with magnetic reconnection event in TS-3 plasma merging device. Counter helicity merging of spheromaks provides significant ion heating by magnetic reconnection to form high-β field-reversed configuration plasma. The magnitude of the fluctuation observed during and after the counter helicity merging has stronger dependency on ion mass than reconnection speed, indicating that fast ion outflow from X-point would bring about excitation of large amplitude low frequency magnetic fluctuations which may be responsible for direct ion heating.

Original languageEnglish
Pages (from-to)233-238
Number of pages6
JournalIEEJ Transactions on Fundamentals and Materials
Volume132
Issue number3
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Alfvén wave
  • Ion heating
  • Magnetic fluctuation
  • Magnetic reconnection
  • MHD (MagnetoHydroDynamics) waves
  • Plasma merging

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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