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Information × Registration Number 0203U008044, 0100U003288 , R & D reports Title Element composition determination of a substance and surface impurities by nuclear physics methods popup.stage_title Head Fedorets I.D., Registration Date 10-04-2003 Organization Kharkov National University named after V.N.Karazin popup.description2 Subject of inquiry: element composition and physical state of thin films and coatings, prepared by various technologies; analytical possibilities of nuclear physics methods; macro- and microelement composition of the AES iodine filters; uranium ores and granite from the Ukrainian crystal shield. Goal of the work: development of new and updating of existing nuclear physics methods of the material analysis. Revealing by these methods the new regularities of formation of the plasma condensate thin films and heat-resistant diffuse barriers in multilayer structures depending on conditions of their formation as well as studies of influence of different factors on their properties. Obtaining the data on the surface properties, thickness, stoichiometric composition, impurity distributions and on the nature of defects in thin coatings and near the surface of solids. A technique for determination of thickness and element composition of thin films and layers of scandium, gallium and germanium with the help of X-ray emission induced by protons is developed as an alternative to other nondestructive methods. Due to the use of proton beams in the resonance energy region the analysis sensitivity to the concentration of light elements in the matrix of heavy elements have been increased. It is shown, that the use of the nondestroing method of the Rutherford proton back scattering for optimization the technology for the creation of film solar photocells on the base of the high temperature selenization with formation of chalkopyrite is not only complementary but also the most advantageous, effective and universal method. The macro- and microcontent of aerosols deposited on iodine filters which had been removed from operation at AES were studied with the help of a powerful high-current electron accelerator as well as characteristic features of depth distribution of isotopes in filters were found and conclusions were made about the possible propagation mechanism of these isotopes through filters. A method of investigation of the process of metal leaching from granite with the use of gamma activation analysis and a method of determination of the uranium ore age with the help of gamma ray registration of radionuclides of the actino-uranium families in the rock samples from the Ukrainian crystal shield are developed. The obtained results reported in 14 publications are of vital importance both for the use in development of new ecologically pure resource-saving technologies of creation of thin-layer nanostructure components of microelectronics and for handling update, first of all for the Ukraine, problems of recovering of filters which were in service and subsequent their utilization in purification systems of AES effluents and also for the development of technology of the new filter creation. The obtained results will be used as well as on the world market of knowledge, viz. in fundamental studies on solid physics (e.g. structure formation mechanism, properties of nanostructure highly dispersive metal and semiconductor layers) and indevelopments of new determination methods of element composition of material. Product Description popup.authors popup.nrat_date 2020-04-02 Close