Formation of field-reversed-configuration plasma with punctuated-betatron- orbit electrons

D. R. Welch, S. A. Cohen, T. C. Genoni, A. H. Glasser

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We describe ab initio, self-consistent, 3D, fully electromagnetic numerical simulations of current drive and field-reversed-configuration plasma formation by odd-parity rotating magnetic fields (RMFo). Magnetic-separatrix formation and field reversal are attained from an initial mirror configuration. A population of punctuated-betatron-orbit electrons, generated by the RMFo, carries the majority of the field-normal azimuthal electrical current responsible for field reversal. Appreciable current and plasma pressure exist outside the magnetic separatrix whose shape is modulated by the RMFo phase. The predicted plasma density and electron energy distribution compare favorably with RMFo experiments.

Original languageEnglish (US)
Article number015002
JournalPhysical review letters
Volume105
Issue number1
DOIs
StatePublished - Jul 1 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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