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Information × Registration Number 0225U000036, (0123U103124) , R & D reports Title Modeling of radiation-induced processes in materials under the influence of irradiation popup.stage_title Моделювання радіаційних перетворень в матеріалах при різних діапазонах температур Head Trotsenko Oleh H., к.ф.-м.н. Registration Date 03-01-2025 Organization Institute of Electrophysics and Radiation Technologies of the National Academy of Sciences of Ukraine popup.description1 Development of a methodology for describing the processes occurring in metals and alloys under the influence of extreme flows of ionizing radiation, which lead to pulse melting of the surface. Modeling of the processes of evolution of the accumulation of defects in the materials of the active zone of nuclear reactors in order to predict the stability of their characteristics. Improvement of existing calculation models and software optimization. popup.description2  A model has been developed that describes the processes of redistribution of alloying elements in aluminum alloys under the influence of a high-current pulsed electron beam. The model is based on the physical effects that accompany the penetration of a pulsed electron beam into the irradiated target and takes into account the back emission of molten matter during the pulse. On this basis, a mathematical model has been built that describes the process of changing the temperature field, taking into account the target heating rate, changes in the thermophysical characteristics of the target material and its phase state. For the case of a long-term set of absorbed dose, the processes of irradiation of zirconium with a flux of thermal neutrons have been studied. A model of the evolution of point defects such as interstitials and vacancies has been built, taking into account their annihilation in different crystallographic planes. Product Description popup.authors Startsev Oleksandr A. popup.nrat_date 2025-01-03 Close