Powerful Microwave Devices

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Gyrotons

Direction of researches:

    The gyroton is a multi-stage amplifier of an initially rectilinear relativistic electron beam (REB), in which modulation (circular scanning) of the REB is accomplished in rotating fields of chain of modulating circular cavities. The REB energy extraction take place in long cavities under the condition of electron cyclotron resonance with the rotating field. A relativistic mathematical model of the nonlinear interaction process is defined and gyroton designs with different types of output resonator modes are compared.

Main Results:

    The gyroton is an efficient super-power microwave amplifier. An efficiency as great as 80-90% may be achieved in a gyroton with a 2-3 stage modulator at normalised to wave length initial radius of beam r=0.4 with optimized design and operating conditions. Experimental results obtained using a simple modification of a gyroton support the estimations of the gyrotons efficiency given in our works. Based on the limiting calue r=0.4, the operating range of the fyroton lies in the frequency from 10⁹ to 3x10¹⁰ GHz, that is, it covers the region intermediate between gyrocons and gyrotrons.

Publications:

1. Kurayev A.A., Sinitsyn A.K. and Slepyan A.Ya., Gyroton // Int.J. Electronics, 1996, vol.80, No.4, pp.603-610.
2. Kolosov S.V. and Kuraev A.A., Non-linear radiation and transformation of drift energy of relativistic electron beams in strong rotating electromagnetic fields. // Radiotekhnika and Elecronika, 1973, vol.18, No.12, pp.2558-2566.
3. Dikun T.Ph., Krasko S.A., Kurayev A.A. and Sinitsyn A.K., Study of efficiency-optimum amplifiers of relativistic electron beams with homogeneous magnetic field. // Radiotekhnika and Elecronika, 1984, vol.29, pp.293-299.
4. Kurayev A.A., Powerful microwave devices. Analysis and optimization of parameters. // 1986, Moskaw: Izd. Radio and Svayz.
5. Kurayev A.A. and Paramonov B.M., Effective mechanisms of interaction of relativistic electron beams with electromagnetic fields. // Radiotekhnika and Elecronika, 1982, vol.27, pp.1403-1407.
6. Kurayev A.A. and Shestakovitch V.P., Generation and amplification of electromagnetic waves by rectilinear relativistic electron beams in an ingomogeneous magnetic field. // Radiotekhnika and Elecronika, 1980, vol.25, pp.815-822.
7. Kurayev A.A. and Sinitsyn A.K., Cascade amplifiers on rekativistic electron beams with magnetostatic tramsformer. // Radiotekhnika and Elecronika, 1985, vol.30, pp.1794-1802.