Abstract
The peniotron is a fast-wave vacuum tube that can generate coherent microwave radiation in the millimeter-wave range. Although it uses a beam of gyrating electrons like other gyro-devices (gyrotron, gyro-TWT, gyro-BWO, etc.), its operating principle is completely different from that of electron cyclotron masers. The theory predicts a very high efficiency (about 95%) of the peniotron mechanism of interaction and energy transfer from the electron beam to the wave. However, this extremely attractive and advantageous property of peniotrons has not yet been realized in practice. In this paper, we present the current state of research on this class of devices and give an overview of the theory and experimental results of peniotrons and gyro-peniotrons with different configurations. We also discuss the main problems and the reasons for the lower efficiency and finally evaluate the potential for solving the problems and revitalizing the work on this promising device.
Published Version
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