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Analysis of Three-Dimensional Motion of Relativistic Electrons in Ion-Focused Electrostatic System

✍ Scribed by P.-K. Liu

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
274 KB
Volume
37
Category
Article
ISSN
0005-8025

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✦ Synopsis

Three-dimensional motion of relativistic electrons in ion-focused electrostatic system, which is the basis of investigating the ion-channel electron cyclotron maser (ICECM) or circular polarized ion-channel laser (CPICL), is analyzed through nonlinear numerical simulation. The results show that the projection of electron orbit in cross-section is, in general, a precessing ellipse with a center on the axis of the ion-channel in a cylindrical ion-focuse electrostatic system. When injection electrons satisfy a specific condition, the electrons can have a steady circular orbit. The effect of relativistic factor on electrons' motion is discussed.

Using the perturbation method, the eigenfrequency of this system is derived as m w o , where wg is the cyclotron frequency of the electrons. This implies that there may exist a new kind of instability in ICECM or CPICL.

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