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Information × Registration Number 0221U106924, 0119U102270 , R & D reports Title Development of scientific and technical solutions of radiation technology of accelerated thermodestruction of carbonaceous materials (wastes) as a new renewable energy source popup.stage_title Head Odeychuk Mickola P., Кандидат технічних наук Registration Date 22-12-2021 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 To conduct experimental work to study the destruction of carbon graphite materials on a linear helium ion accelerator, induction flight sensors for measuring the beam current were developed and manufactured, its calibration and methodical experiments on the accelerator were performed. Work on software and registration of radiation dose was performed. Studies of the experimental stand of accelerated thermal destruction of carbonaceous materials (waste) in oxygen at high temperatures and irradiation with charged particles at the location of accelerators, showed that the proposed system can significantly reduce beam losses during transportation and focus on the beam. See Experiments with the beam from the injector, with an energy of 120 keV, showed that if the current at the input to the triplet is 1.5 mA, and at the output 0.7 mA, then after turning on and adjusting the triplet current at its output is 1.25 ma. Experiments with a helium ion beam accelerated to 4 MeV showed that a current of up to 0.8 mA can be obtained at a target with a diameter of 1 cm. Numerical estimates made using the SRIM code for a helium ion beam with an energy of 4 MeV (pulse current 0.8 mA, pulse duration 500 μs, repetition rate 5 Hz, diameter 1 cm), give on targets of tungsten 0.25 dpa / hour, and for iron - 0.14 dpa / hour. Irradiation of reactor graphite samples with helium ions with energies of 120 keV and 4 MeV in an oxygen atmosphere was performed. It is shown that irradiation of helium ions with a beam leads to acceleration of thermodestruction of graphite in an oxygen medium. It is also shown that the energy of the ion beam significantly affects the rate of its thermal destruction. At an ion energy of 120 keV, the rate of thermal destruction is higher than at an energy of 4 MeV. This is due to the fact that at low ion energies, the damage is near-surface, where there is a lot of oxygen, which leads to an increase in the rate of oxidation of graphite.  Product Description popup.authors popup.nrat_date 2021-12-22 Close