METHOD OF MEASUREMENT OF PHOTON FLUX OF LOW-ENERGY X-RAY RADIATION WITH SCINTILLATION DETECTOR

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to technical physics, in particular to the technology of u0438u0437u043bu0443u0447u0435u043du0438u00a0 u043du0438u0437u043au043eu044du043du0435u0440u0433u0435u0442u0438u0447u0435u0441u043au043eu0433u043e x-ray measurements, and can be used in the metrological service u0434u043bu00a0 u0441u043eu0437u0434u0430u043du0438u00a0 reference means u0438u0437u043cu0435u0440u0435u043du0438u00a0 flow cross section in the u043du0438u0437u043au043eu044du043du0435u0440u0433u0435u0442u0438u0447u0435u0441u043au043eu043c x-ray range.to improve the accuracy of u0438u0437u043eu0431u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 u0438u0437u043cu0435u0440u0435u043du0438u00a0 and the broadening of the range of measurements in the region of the lower energies. the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 is the way of u0447u0438u0441u043fu0430 u043eu0434u043du043eu044du043bu0435u043au0442u0440u043eu043du043du044bu0445 u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du044bu0445 pulses, the amplitude of which lies in the area of noise u0444u043eu0442u043eu0443u043cu043du043eu0436u0438u0442u0435u043bu00a0 (u0444u044du0443).when counting the pulses of the detector u043eu0434u043du043eu044du043bu0435u043au0442u0440u043eu043du043du044bu0435 u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du044bu0435 and noise impulses do not u0440u0435u0433u0438u0441u0442u0440u0438u0440u0443u044eu0442u0441u00a0 and u0434u0438u0441u043au0440u0438u043cu0438u043du0438u0440u0443u044eu0442u0441u00a0 from other u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du044bu0445 u0438u043cu043fu0443u043b u044cu0441u043eu0432 form impulse. the number u0434u0435u043bu0430u0435u0442u0441u00a0 poisson distribution after u0438u0437u043cu0435u0440u0435u043du0438u00a0 average number of electrons in the u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du043eu043c impulse.this u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du044bu0439 u0434u043bu00a0 crystal u043eu0442u0434u0435u043bu00a0u044eu0442 from u0444u044du0443 and set it on the u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435 from u0444u043eu0442u043eu043au0430u0442u043eu0434u0430 u0444u044du0443 for registration u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u0439 mainly in v de u043eu0434u043du043eu044du043bu0435u043au0442u0440u043eu043du043du044bu0445 impulses. u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 amplitude / u043eu0434u043du043eu044d - u043bu0435u043au0442u0440u043eu043du043du043eu0433u043e momentum u0441u043eu0435u0434u0438u043du00a0u044eu0442 crystal with u0444u044du0443 and u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 high amplitude u0441u0446u0438u043du0442u0438u043bu043bu00a0u0446u0438u043eu043du043du043e of momentum, the attitude of the u0430u043cu043fu043bu0438u0442u0443 q gives the average number of u044du043bu04351u0430u0440u043eu043du043eu0432 pulse.3).