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Anomalous ion beam scattering by shear Kelvin—Helmholtz wave interactions

Published online by Cambridge University Press:  13 March 2009

J. P. Hauck
Affiliation:
Physics Department, University of California, Irvine, California 92717
Gregory Benford
Affiliation:
Physics Department, University of California, Irvine, California 92717

Abstract

We inject a fast ion beam across a magnetic field, through a cylindrical 5 cm diameter plasma. Shear Kelvin–Helmholtz waves, already present in the plasma, are considerably amplified. The ion beam is rapidly slowed and scattered. The observed stopping power exceeds the classical power by over two orders of magnitude. A simple theoretical estimate, ascribing beam energy loss to driving of the waves, agrees qualitatively with observations.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1978

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