Charge and current neutralization of an ion-beam pulse propagating in a background plasma along a solenoidal magnetic field.
The analytical studies show that the application of a small solenoidal magnetic field can drastically change the self-magnetic and self-electric fields of the beam pulse propagating in a background plasma. Theory predicts that when omega_{ce} approximately omega_{pe}beta_{b}, where omega_{ce} is the electron gyrofrequency, omega_{pe} is the electron plasma frequency, and beta_{b} is the ion-beam velocity relative to the speed of light, there is a sizable enhancement of the self-electric and self-magnetic fields due to the dynamo effect. Furthermore, the combined ion-beam-plasma system acts as a paramagnetic medium; i.e., the solenoidal magnetic field inside the beam pulse is enhanced.
Kaganovich
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Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
Startsev
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Sefkow
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Davidson
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