Ravindra, A.; Kulkarni, D. B.; Sharma, R.; Prasad, S. S.; Sathian, V.; and others (RSSD;HPD)
Source
Applied Radiation and Isotopes, 2022. Vol. 185: pp. 1-9: Article no. 110228
ABSTRACT
152Eu has been standardized by three independent 4π β-γ coincidence counting systems with beta detectors as proportional counter, plastic scintillator and liquid scintillator along with the CIEMAT/NIST method. The average activity concentration by primary methods was linked to key comparison reference value (KCRV) by comparing it with that of 4π γ ionization chamber (GIC) whose calibration factor was determined from the KCRV (BIPM.RI(II)–K1.Eu-152 and CCRI(II)–K2.Eu-152) and deviates from GIC by ± 0.16% indicating good agreement within standard uncertainties.