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Information × Registration Number 0222U001393, 0120U102300 , R & D reports Title Optimization of formation and control of electron beam fluxes and bremsstrahlung in radiation technologies. popup.stage_title Head Lazuryk Valentyn T., Доктор фізико-математичних наук Registration Date 26-01-2022 Organization V.N. Karazin Kharkiv National University popup.description2  PENELOPE and RT-Office packages, usually applied in radiation technologies, has been modified. These modifications allowed simplifying the process and saving a lot of time to solve the tasks planned in this work. The optimal thicknesses of converters made of heavy elements (Ta, W) and filters have been determined. In the modified PENELOPE package BS spectra at different angles were calculated, what is unfeasible in the standard PENELOPE package. It is shown that with the increase of the angle of departure the photons spectra change, and the average energy decreases. The doses absorbed by the depth of polyethylene from BS falling on the surface of the object at different angles were calculated. It is shown, that the dose distribution along the depth of polyethylene under irradiation depends on the angle of incidence of BS. For double-sided irradiation at a given dose inhomogeneity (DUR), the thickness of the object depends on the interval of BS angles. The types of dependences of the change of magnetic fields of scanners on time, which provide the given distributions of electron fluxes on the surfaces of the irradiated objects and on the bremsstrahlung converters, have been determined. The influence of energy and angular scatter in the electron beam on the change of particle density on the surface have been analyzed. The influence of these factors can be compensated by changes in the magnetic field. An information system (IS) has been developed for obtaining, storing and processing depth dose distributions when irradiating the objects with electron beams at different angles A special PFSEM computational method was applied to determine the parameters of the electron beam. Together with the Institute of Nuclear Chemistry and Technology in Warsaw, the depth dose distribution measurements and testing of the PFSEM method were carried out. Product Description popup.authors Alehina Svetlana V. Lazuryk Valentyn T Rudychev Yegor V Rudychev Volodymyr H popup.nrat_date 2022-03-09 Close