Quench Correction by External Standard Source 152Eu Exchanged for Originally Equipped 226Ra

Abstract

The external standard source of liquid scintillation counter, 226Ra, was exchanged to 152Eu. Quench correction curves by irradiating the radiation to quenched standard samples for a single labeled 3H or 14C, or dual labeled 3H and 14C, were plotted by the computer software that controls the liquid scintillation counting system. Using the correction curve, the radioactivity of quenched standard sample for making correction curves, was determined again quantitatively. The most of corrected values were within ±5% error of the nominal radioactivity of the standard sample.