Abstract
An acceleration of electron by the local electron cyclotron resonance with the non-uniform microwave and static magnetic fields has been investigated. The spatially varying microwave field is generated by (a) a standing wave in a waveguide, (b) a standing wave along a Lecher line and (c) a microwave field perpendicular to a Lecher line, respectively. In these configurations, the maximum acceleration of electrons is made with the local cyclotron resonance at the position of maximum microwave field, only when the magnetic field is decreasing in the direction of electron drift. Further, when the electron beam is accelerated, its energy distribution is spread out, compared with that in the case of no acceleration.
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