Relativistic backward wave oscillator with a discrete resonance reflector

Korovin, S. D.; Kurkan, I. K.; Rostov, V. V.; Totmeninov, E. M.

doi:10.1007/bf02677128

Cited by 31 publications

(8 citation statements)

References 3 publications

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“…The proposed generator scheme was tested experimentally using the nanosecond SINUS-7 electron accelerator [11]. It produced an electron beam with a peak current of about 13 kA and a duration of about 50 ns for a peak diode voltage of approximately 1.3 MV in the single-pulse regime.…”

Section: Resultsmentioning

confidence: 99%

“…It was shown earlier in [7] that in the presence of an electron flow modulation in terms of energy at the input of a relativisticČerenkov generator, the starting synchronism detuning tends to zero when the central electron of the cluster formed at the beginning of the interaction space is situated in the decelerating phase of the synchronous-harmonic field near the boundary of transition to the accelerating phase field (modulation phase φ ≈ π). As the modulation depth increases, the detuning goes over to the region of negative values.…”

Section: Features Of Interaction Of the Electron Flow With The Electrmentioning

confidence: 97%

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On the possibility to realize the efficient relativistic Čerenkov microwave generator without an external guiding magnetic field

Klimov

Korovin

Rostov

et al. 2006

Radiophys Quantum Electron

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We consider the preconditions for efficient operation of the relativisticČerenkov microwave generator in the absence of an external guiding magnetic field. The analytical expression for the length of propagation of a solid cylindrical electron beam along the drift tube is obtained in the framework of the paraxial approximation. The influence of preliminary modulation of the electron beam on the starting current of the generator and its linear efficiency is analyzed. We calculated the geometry of a relativisticČerenkov microwave generator with an efficiency of about 30%, in which the solid cylindrical electron beam propagates over a short resonance decelerating system (with the length L ≈ 3λ, where λ is the radiation wavelength) in the absence of an external magnetic field. In experiments, the efficiency of power conversion from the high-current electron beam into the electromagnetic radiation of the E 01 mode reached 8%, approximately (relative to the total current of the vacuum diode), for a power of 1.2 ± 0.3 GW and a generation frequency of 4.06 GHz.

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Section: Resultsmentioning

confidence: 99%

Section: Features Of Interaction Of the Electron Flow With The Electrmentioning

confidence: 97%

On the possibility to realize the efficient relativistic Čerenkov microwave generator without an external guiding magnetic field

Klimov

Korovin

Rostov

et al. 2006

Radiophys Quantum Electron

Self Cite

View full text Add to dashboard Cite

show abstract

“…The coupling impedance Z n with various harmonics of the operating wave (Fig. 2) can be calculated by the formula [6] where E r (a) is the amplitude of the r component of the electric field of the traveling wave at the wall of a smooth waveguide of radius a and h a is the longitudinal wavenumber (see Fig. 1).…”

Section: Short Communicationsmentioning

confidence: 99%

On reduction of transient process duration in a relativistic Cherenkov microwave oscillator without a guiding magnetic field

Totmeninov

Klimov

2016

Tech. Phys.

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Coupling impedance Z 0 of a continuous relativistic electron beam with the fundamental harmonic of the TM 01 wave slowed down to the speed of light in a slow-wave structure (SWS) based on a hollow corrugated waveguide is estimated analytically and using the program based on the scattering matrix method. It is shown that Z 0 in relativistic Cherenkov microwave oscillators without a guiding magnetic field realized in earlier experiments with the given type of interaction amounts to about 6-7 Ω, which is several times higher than the coupled impedances averaged over the SWS cross section for -1 and +1 spatial harmonics of the operating wave and can be increased in future to values exceeding 10 Ω due to a decrease in the average SWS diameter in admissible limits. In numerical simulation using the KARAT code, the possibility of reduction of the time of stabilization of oscillations of the Cherenkov microwave oscillator without a guiding magnetic field by 1.5 times is demonstrated.

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“…An external magnetic field will allow providing a required length of the e-beam transport in the Manuscript experiment, reducing the current losses in a vacuum-diode region, and excluding the anode mesh from the oscillator circuit. Including a modulating reflector [4] into the circuit will support necessary conditions for preliminary modulation in the electron beam and provide reflection of the wave toward to collector end. A hollow cylindrical explosive-emission cathode with an enlarged cross section is expedient to be used for the following reasons.…”

Section: Introductionmentioning

confidence: 99%

<inline-formula> <tex-math notation="TeX">\(X\) </tex-math></inline-formula>-Band Relativistic Cherenkov Microwave Oscillator With Increased Cross-Sectional Electron Beam

Totmeninov

2014

IEEE Trans. Plasma Sci.

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Based on numerical simulation, a scheme of the X-band relativistic Cherenkov microwave oscillator with a hollow cylindrical increased cross-sectional electron beam transported by the external magnetic field is considered. For the electron energy of ∼0.5 MeV and electron beamwidth of ∼5 mm, an effective 100-ns-long pulse mode in a reduced magnetic field of 0.75 T has been calculated. Within the stationary stage of oscillation, the maximum simulated microwave power for the operating TM 01 mode was 630 MW that corresponded to the oscillator efficiency of 34% at the oscillation frequency of 10 GHz.

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Relativistic backward wave oscillator with a discrete resonance reflector

Cited by 31 publications

References 3 publications

On the possibility to realize the efficient relativistic Čerenkov microwave generator without an external guiding magnetic field

On the possibility to realize the efficient relativistic Čerenkov microwave generator without an external guiding magnetic field

On reduction of transient process duration in a relativistic Cherenkov microwave oscillator without a guiding magnetic field

<inline-formula> <tex-math notation="TeX">\(X\) </tex-math></inline-formula>-Band Relativistic Cherenkov Microwave Oscillator With Increased Cross-Sectional Electron Beam

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