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Onset and saturation of ion heating by odd-parity
rotating-magnetic-fields in a field-reversed configuration
release_g7ujnwwzpffalibfohk5v4plnu
by
A.S. Landsman,
S.A. Cohen,
A.H. Glasser
Released
as a article
.
2011
Abstract
Heating of figure-8 ions by odd-parity rotating magnetic fields (RMF_o)
applied to an elongated field-reversed configuration (FRC) is investigated. The
largest energy gain occurs at resonances (s ≡ω_R/ ω) of the
RMF_o frequency, ω_R, with the figure-8 orbital frequency, ω,
and is proportional to s^2 for s-even resonances and to s for s-odd
resonances. The threshold for the transition from regular to stochastic orbits
explains both the onset and saturation of heating. The FRC magnetic geometry
lowers the threshold for heating below that in the tokamak by an order of
magnitude.
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1101.4774v1
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