Standardisation of 124SB and 152EU using software coincidence counting system

Area of Science:

• Nuclear Chemistry
• Radiochemistry
• Metrology

Background:

• Accurate standardization of radionuclides is crucial for various applications, including nuclear medicine and environmental monitoring.
• The efficiency extrapolation method is a key technique for radionuclide standardization.

Purpose of the Study:

• To determine the activity of antimony-124 ((124)Sb) and europium-152 ((152)Eu) radionuclides.
• To optimize the efficiency extrapolation method for (124)Sb and (152)Eu standardization using 4π(PC)-gamma coincidence counting.

Main Methods:

• Preparation of (124)Sb sources from SbCl(3) in HCl, with drying in H(2)S atmosphere to minimize volatility.
• Application of the efficiency extrapolation method with 4π(PC)-gamma coincidence counting.
• Utilizing a software coincidence counting system for offline data evaluation to determine optimal energy window settings for (152)Eu standardization.

Main Results:

• A beta detection efficiency of 0.98 was achieved for (124)Sb, simplifying standardization.
• Optimal parameters for the extrapolation curve were identified for (152)Eu standardization using the software system.
• Comparison of results from the software coincidence counting system and the conventional method.

Conclusions:

• The developed methods provide accurate standardization for (124)Sb and (152)Eu.
• Software-based coincidence counting offers an effective approach for optimizing radionuclide standardization procedures.