Search academic texts

Information × Registration Number 0204U005324, 0102U005699 , R & D reports Title Theoretical and numerical investigation of main destruction factors of LFCM in the "Shelter" object: summary, prognosis and reccomendations popup.stage_title Head Tokarchuk Mykhajlo Vasyl'ovych, Registration Date 10-06-2004 Organization Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine popup.description2 Report includes 249 pages and consist of 4 chapters of main part, conclusions and references (137 items), 124 figures and 10 tables. Mathematical model of irradiation stimulated diffusion of particles in lava-like fuel containing materials (LFCM) is proposed on the base of general physical conservation laws. The vacancional mechanism of creation of micropores in LFCM is investigated. Space-time dependencies of irradiation stimulated diffusion of particles in the areas of thermal stripe for black and brown LFCM are calculated. The coefficient of thermoradiational viscosity as well as temperature of softening of LFCM are calculated. Structural model of pores LFCM is formulated taking into account appearance of colloidal particles in pores. Thermodynamics of physical processes "molten - crystallization" of LFCM taking into account many components, gase phase and self-irradiation processes. Adsorption constants of ions of radionuclides in pores LFCM are calculated as a functions of porosity and concentration of electrolyte. The processes of off-alkalization of radionuclides from LFCM are analyzed. The behaviour of hydrogen atoms and molecules on the surface of oxide aluminium is investigated. The processes of silicagel formation in the pores of LFCM are analysed. Its motion may considered as one of real mechanisms of migration of radionuclides in LFCM. Criteria of destroying and selftreatment of surface of LFCM are formulated in dependence of pressure and temperature. The processes of dust formation on the surface of LFCM are investigated taking into account kinetics of irradiation of electrons. Product Description popup.authors popup.nrat_date 2020-04-02 Close