Ion and electron acceleration in the fieldreversed configuration with an oddparity rotating magnetic field
Abstract
The method for accelerating ions and electrons in the fieldreversed configuration using oddparity rotating magnetic fields (RMFs) in the ioncyclotron rangeoffrequencies (ICRF) is studied. The approach is based on long, accurate numerical integration of Hamilton's equations for singleparticle orbits. Rapid ion heating to thermonuclear conditions occurs in <0.1 ms in a modestsized FRC. Strong variation of the magneticfield 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. Oddparity RMF promotes oppositely directed ion and electron motion near the minor axis, appropriate for supporting the plasma current.
 Publication:

Physics of Plasmas
 Pub Date:
 May 2002
 DOI:
 10.1063/1.1459456
 Bibcode:
 2002PhPl....9.2093G
 Keywords:

 52.55.s;
 52.55.Lf;
 52.65.Cc;
 Magnetic confinement and equilibrium;
 Fieldreversed configurations rotamaks astrons ion rings magnetized target fusion and cusps;
 Particle orbit and trajectory