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Information × Registration Number 0218U001899, 0118U004932 , R & D reports Title Radiation resistivity of the magnetic field sensors based on the graphene in neutron fluxes popup.stage_title Head Bolshakova Inessa, Доктор технічних наук Registration Date 18-12-2018 Organization Lviv Polytechnic National University popup.description2 During the 2nd stage of the R&D, the first on-line study of graphene Hall sensors in a nuclear reactor was conducted during irradiation by neutrons to the fluences of (1E15 - 1E16) n/cm^2, typical for the outer areas of the future DEMO reactor. Every 3 minutes, the output Hall signals of the studied samples of graphene sensors were measured, while the samples together with the test magnetic field were located in the channel of the nuclear IBR-2 reactor. On the basis of the received array of measured output signals, the software of own development calculated an array of electrophysical parameters of each of the sensors under investigation in the neutron irradiation environment and plotted graphs of the dependence of sensor parameters on the neutron flux. Analysis of the dependence of parameters of the graphene sensors irradiated by neutrons suggests that the change in sensitivity (main parameter) of sensors and in the concentration of charge carriers is within the measurement error with the increase of neutron fluence and temperature. The processing and analysis of the results of the experiment confirmed the theoretical assumptions about the irradiation resistance of graphene sensors and indicate the prospects for continuing research in the direction of optimizing the technology of this material and contacts to it for the use of graphene sensors in the environment with even greater fluences and temperatures. Product Description popup.authors Большакова Інеса Антонівна Васильєв Олександр Васильович Губа Сергій Костянтинович Гумен Степанія Степанівна Когут Інна Володимирівна Кость Ярослав Ярославович Мороз Анатолій Петрович Шуригін Федір Михайлович popup.nrat_date 2020-04-02 Close