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Rev Sci Instrum. 2020 Feb 01;91(2):024706. doi: 10.1063/1.5140720.

Experimental demonstration of the third cyclotron harmonic excitation in technological gyrotron with delayed selective feedback.

The Review of scientific instruments

A P Fokin, A S Sedov, A S Zuev

Affiliations

  1. Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 46 Ul'yanov Street, 603950 Nizhny Novgorod, Russia.

PMID: 32113385 DOI: 10.1063/1.5140720

Abstract

The excitation and effective selection of modes at high harmonics of the cyclotron frequency are experimentally demonstrated using a delayed feedback into the gyrotron. The operation at the third cyclotron harmonic at the frequency of 40.5 GHz with the output power of 3 kW and efficiency 8% is observed in a continuous wave gyrotron with an oil-cooled magnet with a field of 0.5 T in the interaction space.

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