Recently, in a series of articles Mumtaz, Choi, and others

i.e., S. Mumtaz and E. Choi, IEEE Electronic Device Lett. 43, 1756 (2022)

studied a relativistic gridded vircator with one or more dielectric anodes, in which considerable increase in the efficiency of high-power microwave (HPM) generation compared to ordinary vircators was observed. This is very important since the main disadvantage of vircators is their low efficiency. It was suggested that the repelling of electrons by the initial impacting electron charge collected on the dielectric reflectors forms a multi-vircator, which increases HPM production. The present article reports the results of experiments and numerical simulations, which show that this mechanism does not result in high multi-vircator efficiency. Similar dielectric anodes were investigated 50 years ago in a configuration known as the Luce diode, in which collective acceleration of ions was studied. It was also known that the operation of the Luce diode is accompanied by a HPM burst, which was never measured. Results of experiments and simulations in various configurations based on a gridded vircator and dielectric reflectors confirm the existence of high-energy ion acceleration. Unfortunately, none of these configurations produce HPM of higher efficiency than a regular gridded vircator.

中文翻译：

在最近对带有介电反射器的多线圈器的研究背景下重新审视卢斯二极管

最近，在 Mumtaz、Choi 等人的一系列文章中

即 S. Mumtaz 和 E. Choi，IEEE Electronic Device Lett。 43, 1756 (2022)

研究了一种具有一个或多个介电阳极的相对论网格振动器，与普通振动器相比，观察到高功率微波（HPM）产生效率显着提高。这一点非常重要，因为振动器的主要缺点是效率低。有人提出，在介电反射器上收集的初始撞击电子电荷对电子的排斥形成了多维可器，这增加了 HPM 的产量。本文报道了实验和数值模拟的结果，表明这种机制并不能带来高的多谐振器效率。 50 年前，人们在称为 Luce 二极管的配置中研究了类似的电介质阳极，其中研究了离子的集体加速。人们还知道 Luce 二极管的工作会伴随着 HPM 突发，但从未测量过。基于网格振动器和介电反射器的各种配置的实验和模拟结果证实了高能离子加速的存在。不幸的是，这些配置都无法产生比常规网格振动器更高效率的 HPM。