Current Enhancement for Hose-Unstable Electron Beams
NAVAL RESEARCH LAB WASHINGTON DC
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An electron beam injected into a conducting medium produces inductive electric fields. These fields drive conduction currents which, for stable beams, oppose the beam current and thereby reduce the total net current. For unstable beams which undergo large transverse displacements, the inductive field can reverse direction and drive conduction current parallel to the beam current. An analytic and numerical treatment of the latter effect is presented to explain current enhancement as observed for electron beams propagating in gases at pressures above 10 torr. Keywords Electron beams Current enhancement Charged particle beam Nonlinear hose instability Circuit analysis Resistive instabilities.
- Particle Accelerators
- Plasma Physics and Magnetohydrodynamics