Scintillation beta-spectrometer with enhanced sensitivity.
The design of a high-sensitive scintillation beta-spectrometer applied for measuring the content of (90)Sr in environmental samples against the background (40)K and (137)Cs is described. The spectrometer includes a plastic detector with developed surface, to be simultaneously used as a sample container. The content of (90)Sr is determined having a beta-spectrum region of interest 1311-2282 keV. The minimum detectable specific activity of the spectrometer is 3.5 Bq/kg for solid granular samples with a mass of 1000 g and a measuring time of 2 h.
Kadenko
I
I
Taras Shevchenko National University of Kyiv, 2, Build.11, Akademician Glushkov Prosp., Kyiv 03022, Ukraine. ndef@univ.kiev.ua
Maydanyuk
V
V
Petryshyn
V
V
Primenko
G
G
Sedov
Yu
Y