Small-signal theory of the high-power magnetron with intense electron flow

Summary Form only given, as follows. The authors have modified a linear stability analysis of the planar magnetron with intense electron flow to describe the case of a cylindrical magnetron. The eigendifferential equation for extraordinary mode oscillations was solved numerically over a range of parameters characterizing the electron flow and the magnetron geometry. The effect of the anode resonators was imposed through the boundary condition at the outer radius of the electron flow. Both the magnetron instability (doppler-shifted electron cyclotron resonance) and the dicotron instability were observed, with the latter being made possible by the anode resonators, even though the electron flow has only one free surface. The results have implications for the start-up of existing experimental high-power magnetrons.<>