Transient growth in a current-carrying plasma

Details Transient growth in a current-carrying plasma Transient growth in a current-carrying plasma

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979phrvl..42..779l&link_type=abstract

Physical Review Letters, vol. 42, Mar. 19, 1979, p. 779-781. NSF-supported research.

Other

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Magnetohydrodynamic Shear Heating, Magnetohydrodynamic Stability, Plasma Pinch, Tokamak Devices, Current Distribution, Plasma Decay, Plasma Waves, Transient Response

Scientific paper

The transient growth of perturbations due to hydrodynamic shear flow in a current-carrying plasma is analyzed. The results show that a perturbation may grow linearly in time before it eventually decays and that the amplitude may gain by a factor of 50 to 100 on a time scale of 5 to 10 microsec for parameters typical of tokamak geometry. It is suggested that any current-carrying plasma, whether of tokamak or some other geometry, may be subject to transient amplification of fluctuations in sheared Alfven waves.

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