Gigawatt-level microwave bursts from a new type of virtual-cathode oscillator

Details Gigawatt-level microwave bursts from a new type of virtual-cathode oscillator Gigawatt-level microwave bursts from a new type of virtual-cathode oscillator

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvl..59..288d&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 59, July 20, 1987, p. 288-291. Research supported by the Strategic Defense Initia

Physics

22

Electron Energy, Microwave Emission, Radio Bursts, Relativistic Electron Beams, Energy Dissipation, Harmonic Radiation, High Frequencies, Magnetic Fields

Scientific paper

Experiments are described that demonstrate a new method for producing high-power microwave emission. The unstable oscillations of a virtual cathode, which forms when a magnetized relativistic electron beam is injected into a circular waveguide, generate the microwave radiation. In contrast to previous virtual-cathode microwave-generation techniques, electrons in the waveguide cannot be reflected back into the diode. Using this technique, 1.4 GW at 3.9 GHz have been produced with several hundred megawatts radiated in harmonic radiation.

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