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Information × Registration Number 0219U004312, 0116U006159 , R & D reports Title Research and development of powerful dynamic plasma sources, development of methods of active corpuscular plasma diagnostics and physical foundations of advanced plasma technologies. popup.stage_title Head Garkusha Igor Evgenyevich, Доктор фізико-математичних наук Registration Date 26-04-2019 Organization National Science Center "Kharkiv Institute of Physics & Technology" popup.description2 The processes of generation of dense magnetized plasma flows and the dynamics of their compression when operating on "heavy" inert gases and gas mixtures in pinch-discharges of the MPK's magnetoplasma compressor have been experimentally investigated. The features of the formation of the compression region, as well as the measured parameters of the compression plasma, are studied. The influence of initial conditions of development of discharge on the dynamics of compression of the plasma flow in the IPC and the location of the compression region was found. It is established that the position of the compression region is determined primarily by the initial concentration of the working gas in the accelerator channel. When the initial concentration of gas decreases, the compression region shifts from the electrodes. An increase in the initial concentration of gas, provided that the integral mass flow was maintained, led to the displacement of the compression region in the direction of the cut of the central electrode of the IPC. This result is important for finding ways to reduce the erosion of electrodes in various technological applications of pinch discharge. It is shown that the results of measuring the density of plasma in the compression region are in good agreement with the results of the theoretical description of compression plasma flows within the dwarf MHD model. In particular, it is confirmed that the maximum density in the compression region is inversely proportional to the initial density in the accelerating channel Nmax ~ 1/v N0, which corresponds to theoretical representations. The experimentally obtained density value in the compression region of the IPC reaches a value close to the calculated MHD model .An analysis of conditions for similarity in the development of discharge with the use of different working gases or a mixture of gases differing in atomic mass. It was established that the maximum density value at a given initial concentration of the working gas particles does not depend on the integral exchange parameter (integral mass flow). The results of this analysis allow to optimize the discharges in the MPC with plasma, both light and heavy gases. It is determined that when working on helium with local injection of xenon the self-absorption of lines of multicharged xenon lines of peripheral cold plasma is significantly reduced, in comparison with experiments on pure xenon, which made it possible to register spectral lines of high ionized xenon (to Xe V) in the visible range of the spectrum. In this case, the density in the compression mode with local injection significantly exceeded the similar density obtained on pure xenon. Using a double diagnostic complex on heavy ion beams at the TJ-II solenoid, measurements of plasma fluctuations were performed on three energy analyzers. The launch of the third energy analyzer for the first time in the world made it possible to measure simultaneously at 22 points of plasma formation, or in the mode of scanning by the primary beam of ions - across the plasma intersection through the center. Measurement of the correlation of potential profiles, density, and fluctuations of the plasma, both in the poloidal and toroidal directions throughout the intersection of the plasma cord, allows us to deepen understanding of the processes of transfer and stability of plasma in modern stellarators and their optimization. An automated system for measuring X-rays in real time has been developed. The system allows to monitor the intensity of electromagnetic radiation during research in the facilities of controlled thermonuclear fusion, as well as to increase the safety of works of the service personnel in the experimental zone. New devices based on ozone technology for low-temperature sterilization of a medical instrument, including a complex for processing endoscopes and dental instruments, devices for treating burn wounds and receiving ozonized water, as well as ozonizers of compressor and ventilator type, have been developed. Product Description popup.authors Єлiсєєв Дмитро Вiталiйович Аксьонов Микола Миколайович Бирка Олег Володимирович Гаркуша Ігор Євгенійович Геращенко Станiслав Сергійович Губарєв Сергiй Павлович Дешко Галина Миколаївна Древаль Микола Борисович Козачок Олександр Станiславович Комаров Олександр Дмитрович Крупнiк Людмила Iванiвна Кулик Микола Васильович Ладигiна Марина Сергiїв Марченко Ганна Костянтинівна Махлай Вадим Олександрович Соляков Д.Г. Стальцов В.В. Таран Валерiй Семенович Чеботарьов Володимир Володимирович Чередниченко Тетяна Миколаївна popup.nrat_date 2020-04-02 Close