Abstract
An experimental investigation is made of the influence of local nonuniformities of a mirror-configuration magnetic field on oscillations of the space charge and the structure of a long-pulse relativistic electron beam. It is found that the outcome depends on the axial configuration of the nonuniformity. A nonuniformity near the cathode can substantially reduce the amplitude of the oscillations and improve the beam transport. The creation of a nonuniformity far from the cathode leads to an accelerated increase in the oscillations and causes spreading of the transverse structure of the beam. A possible explanation is given for the mechanism responsible for the influence of these local magnetic field nonuniformities assuming reflection of the cathode plasma and electron flux from the magnetic mirror, and also allowing for a jump in the drift velocity.
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Zh. Tekh. Fiz. 67, 83–88 (August 1997)
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Bogdanov, L.Y., Dvoretskaya, N.V., Sominskii, G.G. et al. Influence of nonuniformities of a magnetic-mirror field on the space-time characteristics of a long-pulse relativistic electron beam. Tech. Phys. 42, 930–934 (1997). https://doi.org/10.1134/1.1258756
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DOI: https://doi.org/10.1134/1.1258756