Photonic Crystal-Based High-Power Backward Wave Oscillator
| Autor: | Brian R. Poole, John R. Harris |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Physics Nuclear and High Energy Physics Condensed Matter Physics 01 natural sciences Space charge Electromagnetic radiation 010305 fluids & plasmas Computational physics Normal mode 0103 physical sciences Dispersion (optics) Cathode ray Backward-wave oscillator Beam (structure) Photonic crystal |
| Zdroj: | IEEE Transactions on Plasma Science. 46:25-32 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2017.2774271 |
| Popis: | An electron beam traversing a slow wave structure can be used to either generate or amplify electromagnetic radiation through the interaction of the slow space charge wave on the beam with the slow wave structure modes. Here, a cylindrical waveguide with a periodic array of conducting loops is used for the slow wave structure. This paper considers operation as a backward wave oscillator. The dispersion properties of the structure are determined using a frequency-domain eigenmode solver. The interaction of the electron beam with the structure modes is investigated using a 2-D particle-in-cell (PIC) code. The operating frequency and growth rate dependence on beam energy and beam current are investigated using the PIC code and compared with analytic and scaling estimates where possible. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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