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Information × Registration Number 0226U002888, (0121U109261) , R & D reports Title Investigation of the structure of the nucleus in reactions on charged particles and nuclear-physical methods for the study of nuclear energy materials popup.stage_title Радіаційні процеси та особливості радіаційного впливу на комплекси на основі наногематиту та наномагнетиту для збільшення сорбційної ємності відносно актиноїдів. Head Dykyi Mykola Р., Доктор фізико-математичних наук Registration Date 09-03-2026 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 The aim of the project is to study the behavior of RSF in the energy field of gamma quanta below the GDR maximum (Eg = 10.5 - 13.5 MeV), as well as testing on this experimental material various modern theoretical approaches for calculating E1-RSF. This information is relevant for the development of modern astrophysics, cosmology, reactor construction. The new experimental cross-sectional results will be used not only as input to astrophysical modeling of stellar nucleosynthesis, but also as new information for testing modern computer codes in statistical theory. In addition, the aim of this work will be to study the effect of gamma activation on the properties of nanoparticles of zirconium dioxide with their subsequent use for the sorption of actinides and catalysts in the conversion of hydrocarbons. popup.description2 Radiation contamination of natural resources occurs constantly, regardless of the source. Transuranic elements, which come from various sources, are transferred to the environment and under various physicochemical conditions accumulate, for example, in water bodies, or are transported by groundwater in the form of dissolved macro- or nanoparticles. At the same time, only some of the radioactive waste components are long-lived, including uranium-235, 238, which makes a significant contribution to radiation contamination of the environment due to its high solubility and low level of absorption by natural minerals. Effective sorbents of actinides include iron oxide minerals widely distributed in nature (gamma hematite - Fe2O3 magnetite - Fe3O4). Due to the fact that the migration of actinides in the natural environment is determined by the presence of colloidal particles, a significant portion of which is represented by the nano-sized fraction, sorbents based on nanoparticles will have an increased ability to selective sorption. The effect of high-energy irradiation (E = 22 MeV, I = 500 μA) on iron oxide nanoparticles was used for the directed modification of these nanoparticles. The created radiation-modified sorbents based on their nanoscale have a highly developed active surface, as well as increased chemical reactivity of the surfaces, due to gamma activation - all this led to a high sorption capacity of the sorbents relative to actinides, in comparison with the traditionally used methods. The sorption of actinides on gamma-activated gamma hematite and magnetite nanoparticles was not only complete, but also not reversible. Confirmation was obtained of the possibility of a synergistic effect from the combination of radiation exposure and the advantages of the nanoscale state of the sorbents, which were used and contributed to their functionality in the processes of sorption of actinides from aqueous environments. Product Description popup.authors Dmitry V. Medvedev Ivan M. Shapoval Olena P. Medvedieva Yurii V. Liashko Serhii M. Utenkov popup.nrat_date 2026-03-09 Close