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774 results on '"Glyavin M."'

1. Hybrid subterahertz atmospheric pressure plasmatron for plasma chemical applications

Author

V., Sintsov S., V., Vodopyanov A., A., Mansfeld D., P., Fokin A., A., Ananichev A., A., Goryunov A., I., Preobrazhensky E., V., Chekmarev N., and Yu, Glyavin M.

Subjects
Physics - Plasma Physics
Abstract

This paper presents the results of an experimental study of a new hybrid plasmatron scheme, which was used to realize a gas discharge at atmospheric pressure supported by continuous focused submillimeter radiation with a frequency of 263 GHz. The implemented design allowed organizing a self-consistent interaction between submillimeter radiation and the supercritical plasma in a localized area both in terms of gas flow and electrodynamic. It is experimentally shown that the gas discharge absorbs up to 80% of the introduced submillimeter radiation power. The hybrid subterahertz plasmatron as an effective reactor for non-equilibrium plasma chemical processes was tested for the atmospheric nitrogen fixation.

Published
2024

16. Experimental Study of Terahertz Radiation Generation in the Interaction of Ultrashort Laser Pulse with Gas Targets

Author

Zemskov, R. S., Perevalov, S. E., Kotov, A. V., Bodrov, S. B., Stepanov, A. N., Solov’ev, A. A., Bakunov, M. I., Luchinin, A. G., Ginzburg, V. N., Kuz’min, A. A., Yakovlev, I. V., Stukachev, S. E., Kochetkov, A. A., Shaikin, I. A., Shaykin, A. A., Khazanov, E. A., Glyavin, M. Yu., Chekmarev, N. V., Vodop’yanov, A. V., and Starodubtsev, M. V.

Published
2023
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17. Pulsed magnetic field generation system for laser-plasma research

Author

Luchinin, A. G., Malyshev, V. A., Kopelovich, E. A., Burdonov, K. F., Guschin, M. E., Morozkin, M. V., Proyavin, M. D., Rozental, R. M., Soloviev, A. A., Starodubtsev, M. V., Fokin, A. P., Fuchs, J., and Glyavin, M. Yu.

Subjects
Physics - Applied Physics
Abstract

An up to 15 T pulsed magnetic field generator in a volume of a few cubic centimeters has been created for experiments with magnetized laser plasma. The magnetic field is created by a pair of coils placed in a sealed reservoir with liquid nitrogen, which is installed in a vacuum chamber with a laser target. The bearing body provides the mechanical strength of the system both in the case of co-directional and oppositely connected coils. The configuration of the housing allows laser radiation to be introduced into the working area between the coils in a wide range of directions and focusing angles, to place targets away from the symmetry axis of the magnetic system, and to irradiate several targets simultaneously.

Published
2020
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18. Non-equilibrium atmospheric-pressure plasma torch sustained in a quasi-optical beam of subterahertz radiation

Author

Sintsov, S. V., Vodopyanov, A. V., Viktorov, M. E., Morozkin, M. V., and Glyavin, M. Yu.

Subjects
Physics - Plasma Physics
Abstract

This paper studies a continuous atmospheric-pressure discharge maintained by focused subterahertz radiation of a 263 GHz gyrotron. A plasma torch propagating towards microwave radiation was sustained on an argon flow exiting a metal gas tube in the surrounding atmosphere of air. Using a high-speed camera, the spatial structure of the torch was studied and the temporal dynamics on timescales of the order of 20 ns was examined. The emission spectra of the optical wavelength range were used to estimate the excitation temperature of argon atoms and electron density. It was shown that a discharge of this type is substantially non-equilibrium and the electron temperature is many times higher than the vibrational and gas temperatures, being 1.5-1.7 eV in order of magnitude. The electron density measured by the Stark broadening hydrogen lines exceeds a critical value for the frequency of the heating field.

Published
2020
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20. Observation of extreme-ultraviolet light emission from an expanding plasma jet with multiply-charged argon or xenon ions

Author

Shalashov, A. G., Vodopyanov, A. V., Abramov, I. S., Sidorov, A. V., Gospodchikov, E. D., Razin, S. V., Chkhalo, N. I., Salashchenko, N. N., Glyavin, M. Yu., and Golubev, S. V.

Subjects
Physics - Plasma Physics, Physics - Applied Physics
Abstract

We report the first direct demonstration of possibility to generate the extreme ultraviolet (EUV) radiation with a freely expanding jet of dense plasma with multiply-charged ions supported by high-power microwaves. The detected emission power is about 20 W at 18--50 nm for argon and xenon and 0.3 W at 13--17 nm for xenon. The discharge with a peak electron density up to $3\times 10^{16}\,$cm$^{-3}$ and a characteristic size of $150\,\mu$m is supported by a focused radiation of a recently developed gyrotron with unique characteristics, 250~kW output power at 250~GHz, operating in a relatively long (50$\,\mu$s) pulse mode. Up-scaling of these experimental results gives grounds for development of a point-like kilowatt-level EUV source for a high-resolution lithography able to fulfill requirements of the microelectronics industry., Comment: 5 pages, 3 figures, submitted to Appl. Phys. Lett. (2018)

Published
2018
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24. Formation of an Annular Electron Beam for Subterahertz Gyrotrons Using an Electron-Optical System With a Multitip Field Emitter

Author

Sominskii, G., Taradaev, E., Taradaev, S., Glyavin, M., and Zuev, A.

Abstract

The patterns of electron beam formation by an electron-optical system (EOS) with a multitip field emitter have been studied both experimentally and with the help of numerical modeling. This article considers the distribution of electrons in the beam along transverse and longitudinal velocities, which are necessary for the development of EOS. The achievable output parameters of radiation generation have been determined when installing an EOS with a field emitter in a gyrotron operating at a frequency of 140 GHz. This system provides an electron beam with the currents of approximately up to 60 mA and operates stably at the typical technical pressures of about $10^{-{7}}$ torr.

Published
2024
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36. Microwave Setup of a Megawatt Power Level for the ECR Plasma Heating and Current Drive System of the T-15MD Tokamak

Author

Denisov, G. G., Malygin, V. I., Tsvetkov, A. I., Eremeev, A. G., Shmelev, M.Yu., Belousov, V. I., Baber, I. S., Karpov, N. I., Leonov, I. I., Kopelovich, E. A., Troitskiy, M. M., Kuznetsov, M.V., Varygin, I. A., Zhurin, K. A., Movshevich, B. Z., Chirkov, A. V., Glyavin, M. Yu., Tai, E. M., Soluyanova, E.A., Bakulin, M. I., Roy, I. N., Anashkin, I. O., Khvostenko, P. P., and Kirneva, N. A.

Published
2020
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45. Development of a Two-Channel Quasi-Optical Converter for a Multifrequency Gyrotron in the Range of 176–250 GHz

Author

Gashturi, A. P., Zuev, A. S., Fokin, A. P., Sobolev, D. I., Chirkov, A. V., Tai, E. M., Kuftin, A. N., Glyavin, M. Yu., and Denisov, G. G.

Abstract

Nowadays, the development of multifrequency high-power subterahertz gyrotrons for electron cyclotron (EC) heating and plasma diagnostics is in great demand. The article examines the prospects of using a special two-channel quasi-optical converter for the output of radiation at several frequencies through two separate windows. The converter was developed by hybrid synthesis and the MoM/electric field integral equation (EFIE) method. The approach is being investigated for the gyrotron with a frequency of 250 GHz and a power of up to 330 kW. The designed system makes it possible to output radiation at up to five frequencies in the range of 176–250 GHz with efficiency at the level of optimized single-frequency gyrotrons.

Published
2024
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47. Laboratory modeling of YSO jets collimation by a large-scale divergent interstellar magnetic field.

Author

Zemskov, R., primary, Burdonov, K., additional, Soloviev, A., additional, Sladkov, A., additional, Korzhimanov, A., additional, Fuchs, J., additional, Bisikalo, D., additional, Zhilkin, A., additional, Barkov, M., additional, Ciardi, A., additional, Yao, W., additional, Glyavin, M., additional, Morozkin, M., additional, Proyavin, M., additional, Luchinin, A., additional, Chuvakin, P., additional, Ginzburg, V., additional, Kochetkov, A., additional, Kuzmin, A., additional, Shaykin, A., additional, Shaikin, I., additional, Perevalov, S., additional, Kotov, A., additional, Pikuz, S., additional, Ryazantsev, S., additional, Khazanov, E., additional, and Starodubtsev, M., additional

Published
2023
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