Abstract:Ion heating by application of rotating magnetic fields (RM F ) to a prolate field-reversed configuration (FRC) is explored by analytical and numerical techniques. For odd-parity RMF (RM F o ), perturbation analysis shows ions in figure-8 orbits gain energy at resonances of the RM F o frequency, ω R , with the figure-8 orbital frequency, ω. Since figure-8 orbits tend to gain the most energy from the RMF and are unlikely to escape in the cusp region (where most losses occur), they are optimal candidates for rapi… Show more
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