Submillimeter Radiation from Intense Relativistic Electron Beams

Abstract

Radiation from an intense relativistic electron beam at submillimeter wavelengths has been measured with bandpass and high-pass filters. Radiated power ~ 100 kW has been measured in the passband 390 μm -540 μm. The generation of this radiation depends on giving the electrons a large energy component transverse to the magnetic guide field. Coherent wave generation mechanisms which may account for the observed radiation are discussed.