ISSN:
1572-9559
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract Based on the electron movement principles the beam paraxial trajectory and space trajectory equation in drifting space filled with plasma are given in this paper. The space is divided into two areas(α and β, β contains β1 and β2), the behavior of electrons in these areas is studied. The equations are theoretically or numerically solved, the focussing and transmission properties are studied and some parameters affecting these properties are discussed in detail. The relativistic effect is also taken into account. The study shows that with plasma filled the beam can be focused efficiently and transmitted with high quality by optimally choosing the plasma filling fraction and the voltage. Plasma microwave electronics stemmed from 1949, however, it developed rapidly in recent years. In the process of high power microwave study, plasma is more and more introduced into microwave source. Because of the neutralization effect of plasma, the beam can transmit with high quality, even under weak or without magnetic field, it can propagate through drifting tube or slow wave structure by its self magnetic focusing force[1–2]. By making full use of this property, microwave devices without magnetic field system can be made, this leads to a decrease in volume and weight of the device. Some experiments show that this kind of device can promote the output power and efficiency obviously. However, because of the presence of plasma, the beam's behavior changes greatly compared to those under vacuum condition. It is important to study the properties of the beam in drifting space or slow wave structure filled with plasma for the development of the device.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1021724022230
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