Stability Properties of Azimuthally Symmetric Perturbations in an Intense Electron Beam
NAVAL RESEARCH LAB WASHINGTON DC
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The Vlasov-Maxwell equations are used to investigate the stability of azimuthally symmetric perturbations e.g., sausage and hollowing modes of an electron of ion beam immersed in a resistive plasma. The perturbed space charge and plasma current are treated self-consistently for any value of the plasma conductivity. A similar analysis of the hose instability is also carried out. The analysis is carried out for the loss-cone distribution function in which all of the beam electrons have the same value of energy and the same value of axial canonical momentum. In the high conductivity regime, the system is shown to be strongly destabilized by a sufficiently large value of the fractional current neutralization.
- Nuclear Physics and Elementary Particle Physics
- Plasma Physics and Magnetohydrodynamics