Starting currents of modes in cylindrical cavities with mode-converting corrugations for second-harmonic gyrotrons
| Autor: | Viktor Tkachenko, Tetiana I. Tkachova, John Jelonnek, Zisis C. Ioannidis, Vitalii I. Shcherbinin, Manfred Thumm |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Coupling Technology Radiation Field (physics) Physics::Optics Harmonic (mathematics) Mechanics Condensed Matter Physics System of linear equations law.invention Azimuth law Gyrotron Physics::Accelerator Physics Classical electromagnetism Electrical and Electronic Engineering ddc:600 Instrumentation Eigenvalues and eigenvectors |
| Zdroj: | Journal of infrared, millimeter, and terahertz waves, 42, 260–274 |
| ISSN: | 1866-6906 1866-6892 |
| Popis: | A self-consistent system of equations (known as single-mode gyrotron equations) is extended to describe the beam-wave interaction in a cylindrical gyrotron cavity with mode-converting longitudinal corrugations, which produce coupling of azimuthal basis modes. The system of equations is applied to investigate the effect of corrugations on starting currents of the cavity modes. For these modes, eigenvalues, ohmic losses, field structure, and beam-wave coupling coefficients are investigated with respect to the corrugation parameters. It is shown that properly sized mode-converting corrugations are capable of improving the selectivity properties of cylindrical cavities for second-harmonic gyrotrons. |
| Databáze: | OpenAIRE |
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