Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Roman M. Rozental"'
Publikováno v:
IEEE Transactions on Electron Devices. 70:1878-1885
Autor:
Roman M. Rozental, Sergey V. Samsonov, Alexander A. Bogdashov, Igor G. Gachev, Anton A. Ivanov, Maxim V. Kamenskiy
Publikováno v:
IEEE Electron Device Letters. 44:140-143
Publikováno v:
IEEE Electron Device Letters. 42:1394-1397
We present results of experiments where Ka-band chaotic oscillation regimes with a bandwidth of about 1 GHz have been obtained in a pulsed gyrotron backward wave oscillator (gyro-BWO) using a helically corrugated waveguide. The averaged radiated powe
Publikováno v:
IEEE Electron Device Letters. 42:1073-1076
We present the first experimental proof of hyperchaotic regimes in a gyrotron. Based on experimental data analysis, we calculate the spectrum of Lyapunov exponents and estimate the correlation dimension of the attractors in non-stationary regimes of
Autor:
M. N. Vilkov, Naum S. Ginzburg, Irina V. Zotova, Sergey V. Samsonov, Lev A. Yurovskiy, E. B. Abubakirov, Roman M. Rozental
Publikováno v:
IEEE Electron Device Letters. 42:426-429
We demonstrate theoretically the possibility of efficient amplification and subsequent recompression of sub-nanosecond (0.25-0.3 ns) microwave superradiant pulses, which underwent preliminary stretching and became frequency-chirped. Similar technique
Autor:
Mikhail Yu. Glyavin, Roman M. Rozental, Sergey V. Samsonov, Dmitry Mansfeld, I. G. Gachev, A.A. Bogdashov, Alexander Vodopyanov
Publikováno v:
IEEE Transactions on Electron Devices. 68:330-335
By means of reflecting the output radiation from a wideband Bragg reflector, a multifrequency radiation source was experimentally implemented based on a continuous wave (CW) helical gyroresonance traveling-wave tube (gyro-TWT) with an operating frequ
Autor:
A. E. Fedotov, Irina V. Zotova, M. Yu. Glyavin, Vladimir N. Manuilov, Toshitaka Idehara, Seitaro Mitsudo, Roman M. Rozental
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 41:1488-1497
A magnetron-injection gun able to provide very high ratio tj≈ 0.5 of the beam current to the Langmuir current has been designed, while maintaining good enough quality and stability of a formed helical electron beam. The specific feature of the gun
Autor:
Vladimir Rumyantsev, Roman M. Rozental, Irina V. Zotova, S. V. Morozov, Andrey P. Fokin, Mikhail Yu. Glyavin, Andrey M. Malkin, A. S. Sergeev
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 41:1245-1251
The effect of frequency multiplication was investigated for a fundamental-harmonic 0.263-THz kW-level gyrotron, in which a certain fraction of its radiation was observed experimentally at the doubled operating frequency. Accurate measurements of the
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 84:189-192
The optimum parameters for the generation of rogue waves (ultrashort pulses with peak powers several tens or hundreds of times higher than the average radiation power) in gyrotrons are determined. The possible generation of ultra-wideband chaotic mil
Autor:
Roman M. Rozental, Naum S. Ginzburg, M. S. Nagornuk, A. E. Smirnov, A. A. Ivanov, M. N. Vilkov
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 84:184-188
A so-called shumotron (a chaotic oscillator with a continuous spectrum based on two coupled traveling wave tubes, one of which is an amplifier and the other acts as a nonlinear element) is modeled using a nonstationary distributed model of a travelin