Output characteristics of the high-power microwave generated from a coaxial vircator with a bar reflector in a drift region
| Autor: | Kyu B. Jung, Eun Ha Choi, Wook Jeon, Hee Myung Shin, Yoonho Seo, Won Bae Park, Min Wug Moon, Jeong Eun Lim |
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| Rok vydání: | 2006 |
| Předmět: |
Physics
Nuclear and High Energy Physics Computer simulation Physics::Instrumentation and Detectors business.industry Bandwidth (signal processing) Astrophysics::Instrumentation and Methods for Astrophysics Electrical engineering Physics::Optics Vircator Condensed Matter Physics Cathode Anode law.invention Optics Physics::Plasma Physics law Cathode ray Physics::Accelerator Physics Coaxial business Microwave |
| Zdroj: | IEEE Transactions on Plasma Science. 34:937-944 |
| ISSN: | 0093-3813 |
| Popis: | Numerical simulation studies of a coaxial virtual cathode oscillator with and without a bar reflector have been performed by the three-dimensional particle-in-cell (PIC) code, MAGIC. Also, the experimental studies are performed in our high-power microwave pulser, "Chundoong" to compare with numerical results. It consists of a cylindrical anode-mesh, a coaxial type cathode, and a bar reflector. Results show that the output microwave mode without a reflector is shown to be a mixture of TE and TM modes and the output microwave frequency has a narrow bandwidth and a main frequency is about 3.38 GHz from a coaxial vircator without a bar reflector. But the TM01 mode with its frequency of 3.34 GHz is shown to be dominant for the coaxial vircator with a bar reflector. It is found in this experiment that the output microwave power sensitively depends upon the position of a bar reflector |
| Databáze: | OpenAIRE |
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