u043au0430u043bu0438u0431u0440u0430u0442u043eu0440 liquid scintillation beta radiometer u0433u0435u0440u043cu0435u0442u0438u0437u0438u0440u0443u044eu0449u0435u0439 containing container with lid and walls, transparent to the spectrum of the light u0441u0446u0438u043du0442u0438u043bu043b u044fu0442u043eu0440u0430, which is a solution of a beta radiator in the liquid u0441u0446u0438u043du0442u0438u043bu043bu044fu0442u043eu0440u0435, a fact that, in order to reuse u043au0430u043bu0438u0431 u0440u0430u0442u043eu0440u0430 and radiation safety multiple calibrationinside the container is further placed u0434u0438u0441u043fu0435u0440u0441u043du044bu0439 u0441u0432u0435u0442u043eu043fu043eu0433u043bu043eu0442u0438u0442u0435u043bu044c in powder form with a density different from the density, the model solution and u0432u0437u0430u0438u043cu043eu0434u0435u0439u0441 u0442u0432u0443u044eu0449u0435u0433u043e with him.
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