电阻性等离子体通道中带电粒子束的稳定性
Stability of a Charged Particle Beam in a Resistive Plasma Channel
摘要：
本文研究了惯性相对论束流在外加磁场约束的等离子体通道中的自聚焦，作为对直线加速器束流注入器（射频四极）出射束流进行再调节的一种手段。对自聚焦光束的稳定性进行了详细的研究。为了统一地解释束丝和电阻软管不稳定性，我们在有限等离子体通道中的色散关系的推导中处理了所有的方位角模，它们表现出许多不稳定模，这些模按温伯格方案[Steven Weinberg，J. Math.8，614（1967）]进行了分类。
英文摘要：
A self-focusing of a coasting relativistic beam in a plasma channel that is confined by an external magnetic field is studied as a means of reconditioning the beam emerging from a beam injector [a radio frequency quadrupole (RFQ)] for a linac. A detailed study of the beam stability in the self-focused beam has been carried out. In order to explain beam filaments and the resistive hose instability in a unified way, we treat all the azimuthal modes in the derivation of the dispersion relation in a finite plasma channel that exhibit many unstable modes, which are classified by Weinberg's scheme [Steven Weinberg, J. Math. 8, 614 (1967)].
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