A low level liquid scintillation spectrometer with five counting modules for 14 C, 222 Rn and delayed coincidence measurements
作者： Konrad Tudyka , Sebastian Miłosz , Alicja Ustrzycka , Sebastian Barwinek , Wojciech Barwinek
DOI: 10.1016/J.RADMEAS.2017.06.003
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摘要: Abstract This paper presents a low-level liquid scintillation counting spectrometer with five identical units that allow simultaneous measurements to be performed. The chambers are enclosed in high purity copper and lead shielding which significantly decreases the background count rate. Each of is equipped stability software-controllable power supply, each module contains signal analyzer measures pulse height, shape time between subsequent pulses, returning all data as time-stamped sequence enables identification pairs. Such pairs, arising from decay 214 Bi/ Po, provides sensitive tool for 222 Rn contamination determination 14 C measurements. radiocarbon dating or bio-component performed directly after scintillator production without risk interfering measurement C.
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