Activity standardization of Ca-41 by means of liquid scintillation counting

摘要

Liquid scintillation counting according to the CIEMAT/NIST method was used for the activity standardization of Ca-41. The Counting efficiencies were computed with two different atomic rearrangement models (KLM and KL1L2L3M) applying an improved model for the interaction of low-energy X-rays with the scintillation cocktail. This report comprises a detailed description of the determination of nuclear and atomic input data, sample preparation as well as a comprehensive uncertainty analysis.