Ion and electron acceleration in the field-reversed configuration with an odd-parity rotating magnetic field

A. H. Glasser, S. A. Cohen

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The method for accelerating ions and electrons in the field-reversed configuration using odd-parity rotating magnetic fields (RMFs) in the ion-cyclotron range-of-frequencies (ICRF) is studied. The approach is based on long, accurate numerical integration of Hamilton's equations for single-particle orbits. Rapid ion heating to thermonuclear conditions occurs in <0.1 ms in a modest-sized FRC. Strong variation of the magnetic-field strength over the confinement region prevents a true cyclotron resonance, resulting in stochastic though effective heating. Lyapunov exponents are computed to demonstrate chaotic orbits. Electrons are also effectively heated in this frequency range, primarily by a mechanism involving trapping in the wells of the azimuthal electric field. Odd-parity RMF promotes oppositely directed ion and electron motion near the minor axis, appropriate for supporting the plasma current.

Original languageEnglish (US)
Pages (from-to)2093-2102
Number of pages10
JournalPhysics of Plasmas
Volume9
Issue number5
DOIs
StatePublished - May 1 2002

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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