Accuracy of Cerenkov measurements using a liquid scintillation spectrometer

Rapid screening of 90Sr activity in water and milk samples using Cherenkov radiation

“…The efficiency for density 1.000 kg L À1 corresponded to the efficiency for water. This decrease was also observed by Takiue et al (1996), who investigated the accuracy of Cherenkov measurements using a Liquid Scintillation Spectrometer. These authors observed that by adding small quantities of milk in water samples (0e4% of the mixed sample), the efficiency for the Cherenkov counting of 90 Sr/ 90 Y dropped from about 66% to 58%.…”

Fast determination of 90Sr/90Y activity in milk by Cherenkov counting

“…As mentioned earlier, most of the Cherenkov radiation is produced by 90 Y, thus the 90 Sr activity was deduced from the measured activity based on secular equilibrium. Polyethylene vials were used, as it is generally accepted that they are superior to glass vials for Cerenkov counting (Takiue et al, 1996;L'Annunziata and Passo 2002). The vials volume was 20 ml.…”

32P measurement of urine samples and internal dose assessment for radiation workers in life science laboratories

“…However, Cherenkov radiation is emitted at a lower energy range (0-50 keV). The conventional functions of the 1220 QUANTULUS LSC using a Compton spectrum could not be applied to Cherenkov radiation detection due to the presence of low energy Compton electrons [10]. To derive an efficiency correction curve the same standard samples were measured.…”