95 GHz Gyrotron with Ferroelectric Cathode
| Autor: | Dmitri Borodin, Moshe Einat, H. Hirshbein, Roey Ben-Moshe, Moritz Pilossof |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors business.industry General Physics and Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Plasma Ferroelectricity Cathode law.invention Physics::Plasma Physics Duty cycle law Gyrotron Extremely high frequency Optoelectronics Millimeter business Microwave |
| Zdroj: | Physical Review Letters. 109 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.109.185101 |
| Popis: | Ferroelectric cathodes were reported as a feasible electron source for microwave tubes. However, due to the surface plasma emission characterizing this cathode, operation of millimeter wave tubes based on it remains questionable. Nevertheless, the interest in compact high power sources of millimeter waves and specifically 95 GHz is continually growing. In this experiment, a ferroelectric cathode is used as an electron source for a gyrotron with the output frequency extended up to 95 GHz. Power above a 5 kW peak and $\ensuremath{\sim}0.5\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$ pulses are reported; a duty cycle of $10%$ is estimated to be achievable. |
| Databáze: | OpenAIRE |
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