Cause of sudden magnetic reconnection in a laboratory plasma

S. Choi, D. Craig, F. Ebrahimi, S. C. Prager

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The cause for sudden reconnection in reversed field pinch plasmas is determined experimentally for two cases: large reconnection events (the sawtooth crash) and small reconnection events during improved confinement. We measure the term in the MHD equations which represents the driving (or damping) of edge tearing modes due to the axisymmetric magnetic field. The term is negative for large reconnection events (the modes are stable, implying that reconnection may be driven by nonlinear coupling to other modes) and positive for small reconnection events (modes are unstable, reconnection is spontaneous).

Original languageEnglish (US)
Article number145004
JournalPhysical review letters
Volume96
Issue number14
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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