The Use of Ferromagnetic Screens in the Cathode of a Pulse-Periodic Relativistic Magnetron

Abstract

Microwave generation by a relativistic magnetron with cathode end screens made of ferromagnetic material was experimentally investigated. The dependences of the power and the width of microwave pulses on the field induction were measured for different cathode designs. The comparison of the data we obtained with the results of experiments in which the cathodes had no screens and had nonferromagnetic screens showed that the ferromagnetic end screens increased the microwave power by approximately 60 and 13% compared to the design without any screens and with the nonferromagnetic screens, respectively.