Extraction and propagation of an intense, rotating electron beam
- 1 January 1985
- journal article
- letter
- Published by AIP Publishing in Physics of Fluids
- Vol. 28 (1), 434-437
- https://doi.org/10.1063/1.865172
Abstract
A hollow relativistic electron beam produced in a strong axial magnetic field has been extracted into a neutral gas cell where the field is zero. In the field‐free region, equilibrium is dictated by a balance between the vz×Bθ radial pinch force and the centrifugal outward force. Extraction and propagation of these beams has been studied experimentally with a variety of diagnostics. A strong, low‐frequency filamentation instability is observed after extraction. In general, 80% of the beam energy has been extracted and propagated 75 cm. Beam equilibrium properties are in good agreement with simple theory with the exception of the azimuthal plasma current.Keywords
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