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Information × Registration Number 0219U000200, 0116U007563 , R & D reports Title The researchers of the effect of interaction of hydrogen ions and its isotopes with structural materials are used in nuclear power industry popup.stage_title Head Fedorovych Oleg Antonovych, Кандидат фізико-математичних наук Registration Date 21-01-2019 Organization Sceintific Center "Inststute for nuclear reaseach National Academy of sciences Ukraine popup.description2 Abstract Report on the study: 53 pp., 26 fig., 4 tab., 19 sources. At the third stage of research, the effect of irradiation of helium ions with samples of various materials, their mass spectrometric, X-ray diffraction studies and electron microscopy was studied. Dosimetric measurements of samples. To do this, it is necessary to carry out a certain amount of work on upgrading the plasma source of hydrogen and helium ions with the required parameters and the substrate holder of various materials. The results of studies of the interaction of protons with an energy of 250 - 260 eV with the surface of tungsten foil are presented. Tungsten is sprayed at a rate of ~ 0.5 µm / h at a temperature of 300 ° C and an ion current density of ~ 1.5 mA / cm2. The surface of tungsten varies considerably after the irradiation process. The surface is largely free of oxides, including due to their reduction in hydrogen plasma. The hydrogen content in tungsten decreases in depth, especially it is large on the surface of the sample. The surface of molybdenum changes significantly after proton irradiation. Due to the sputtering of the surface, a substantial cleaning of the surface from oxides occurs. It is also possible to reduce oxides in a hydrogen plasma. After processing, the surface of molybdenum becomes more uneven with the manifestation of a fine structure. Molybdenum is sprayed at a rate of ~ 0.1 µm / h at a temperature of 300 ° C and an ion current density of ~ 1.5 mA / cm2. After irradiation with protons, the hydrogen content near the molybdenum surface practically does not increase. The content of hydrogen in molybdenum does not vary in depth, but constantly before and after irradiation. Molecular hydrogen is not observed in both samples. On the SIMS spectra of 7 isotopes of Mo and the same of its oxides and dioxides are separated. After the treatment of Mo, a series of atomic masses belonging to materials of a stainless steel substrate holder (12X18H10T) (Cr, Fe, Ni, Ti, Mn isotopes, etc.) is observed on the Mo surface. Isotopes of other impurities are also observed, which can be pereraspylyatsya from the substrate holder and silicon, which covers the unworkable area of ??the sample. The results of studies of the interaction of protons with an energy of 260 eV with the surface of aluminum foil at a temperature of 300 ° C, ion current density of ~ 1.5 mA / cm2 with an exposure time of 11 hours are presented. The surface of aluminum changes significantly after the irradiation process, covered with bubbles and microcraters. Observed surface blistering. The surface is largely free of oxides by spraying the surface, as well as by reducing them in a hydrogen plasma. After aluminum is irradiated by protons, the hydrogen content increases significantly at the sample surface, the content of which gradually decreases in depth. Sputtering of the structures of the plasma-chemical reactor is observed, which leads to contamination of the material being processed, and the mass spectra show the masses of isotopes of the elements that make up the nonmagnetic stainless steel 12X18H10T. Product Description popup.authors Войтенко Леонід Михайлович Гладковський Володимир Володимирович Костін Євген Георгійович Петряков Володимир Олексійович Полозов Борис Павлович Рокицький Олександр Анатолійович Шевель Валерій Миколайович popup.nrat_date 2020-04-02 Close