Experimental and Theoretical Investigation of Microwave and Millimeter Wave Radiation from Hollow, Rotating, Electron Beams.

Abstract : Research on microwave generation from rotating electron beams in various conducting boundary systems has been pursued with the major emphasis being on the production of radiation from rotating electron beams in magnetron like conducting boundary systems. These experimental configurations are new recognized as an entirely new type of microwave tube, referred to in the literature as a Gyromagnetron, High Harmonic Gyrotron, or Cusp Injected Magnetron (Cusptron). The interest in this new device has centered around its potential to reduce the required magnetic field in microwave tubes by an order of magnitude by allowing operation at a high harmonic of the electron cyclotron frequency. Results from research on millimeter and submillimeter waves produced by rotating electron beams in rippled magnetic fields, are also summarized in this report.