Abstract
It is shown that the drift cyclotron loss cone instability can be suppressed by modulating electron density within the plasma. With the feedback in +90° phase the critical density gradient needed for the onset of the drift cyclotron loss cone instability increases approximately linearly with the gain. Typically with the gain of −50Ω i the critical density gradient can be pushed up by as much as two orders of magnitude and minimum mirror plasma radius can be brought down in the same proportion.
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Avinash, Varma, R.K. Feedback stabilization of drift cyclotron loss cone instability by modulated electron sources. Pramana - J. Phys. 16, 131–138 (1981). https://doi.org/10.1007/BF02848016
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DOI: https://doi.org/10.1007/BF02848016