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Information × Registration Number 0121U114123, R & D request Title Comparative analysis of radiation-induced processes in complex oxide crystals and ceramics for their application in fusion devices Head Hirka Ihor O., Доктор фізико-математичних наук Registration Date 03-12-2021 Organization V.N. Karazin Kharkiv National University popup.description1 Main objective of this experimental-theoretical project is a detailed comparative analysis of the performance of complex oxide crystals and ceramics of MgAl2O4 and Ba(Sr)TiO3 in extreme radiation environment. Another objective is understanding of the role of the impurities (Mn, Fe, Cr and Ti) in the radiation damage mechanisms under different radiation types (neutron, gamma, fast electrons, swift heavy ions, etc.) and conditions, in order to predict the material behaviour in fusion reactor devices. Special attention will be paid to research under extremely high irradiation conditions when optical absorption is already uninformative, that is, "beyond optical absorption". To implement this, the combination of traditional optical absorption with magnetic (EPR) and Raman and infrared techniques will be applied. Main objective of the atomic scale computer modelling is not only to validate the experimental data and to understand in details the origin and structure of radiation point defects, but also predict where and how possible defects may manifest themselves in optical absorption, Raman, infrared or EPR spectra, which is a key issue for their identification. Main objective of the analysis and modelling of experimental diffusion-controlled recombination kinetics is to derive diffusion parameters (activation energies) in the conditions of radiation-induced disordering. popup.nrat_date 2024-12-09 Close