Dynamics of Multimode Processes at the Leading Edge of the Accelerating-Voltage Pulse in a Gyrotron Driven by an External Signal

We study the oscillation regimes for the model of a gyrotron with a fixed Gaussian longitudinal field structure and three modes of an equidistant spectrum (an operation mode and two satellites symmetrically spaced by frequency) during autonomous operation and under the action of an external monochro...

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Bibliographic Details
Published in:Radiophysics and quantum electronics 2020-10, Vol.63 (5-6), p.381-391
Main Authors: Grigorieva, N. V., Ryskin, N. M., Denisov, G. G., Novozhilova, Yu. V., Glyavin, M. Yu, Bakunin, V. L.
Format: Article
Language:English
Subjects:
Analysis
Astronomy
Astrophysics and Astroparticles
Cyclotrons
Electric potential
Hadrons
Heavy Ions
Lasers
Leading edges
Locking
Mathematical and Computational Physics
Nuclear Physics
Observations and Techniques
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Plasma physics
Quantum Optics
Theoretical
Voltage
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Summary:We study the oscillation regimes for the model of a gyrotron with a fixed Gaussian longitudinal field structure and three modes of an equidistant spectrum (an operation mode and two satellites symmetrically spaced by frequency) during autonomous operation and under the action of an external monochromatic signal. The two-parameter (dimensionless current and the cyclotronresonance mismatch for an operating mode) plane is partitioned into the regions corresponding to various regimes. It is shown that the presence of a maximum at the leading edge of the voltage pulse can lead to excitation of the parasitic modes in the process of the power-source switch-on and to quenching of oscillation of the operating mode. These undesirable effects can be suppressed by locking the operation-mode frequency by an external monochromatic signal, which provides oscillation at the operation mode.
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-021-10063-1