Simulation technique for extrapolation curves in 4πβ-γ coincidence counting method using EGS5 code

Area of Science:

• Nuclear Physics
• Metrology
• Radiation Detection

Background:

• The 4πβ-γ coincidence counting method is crucial for accurate radioactivity determination.
• Extrapolation techniques are essential to correct for detection inefficiencies in coincidence counting.
• Validating simulation methods against experimental data is vital for reliable nuclear measurements.

Purpose of the Study:

• To develop and validate a simulation technique for the extrapolation method in 4πβ-γ coincidence counting.
• To assess the accuracy of simulated coincidence counts using the EGS5 code.
• To investigate the impact of gamma-gate configurations on extrapolation curves.

Main Methods:

• Utilized the EGS5 Monte Carlo code to simulate simultaneous β and γ ray emissions.
• Calculated coincidence counts between β and γ detection channels.
• Compared simulated extrapolation curves with experimental data from (134)Cs measurements.
• Employed a plastic scintillator for β detection in the experimental setup.

Main Results:

• The simulation technique successfully reproduced extrapolation curves.
• Simulated coincidence counting aligned well with experimental data for (134)Cs.
• The study demonstrated the influence of gamma-gate settings on the extrapolation curves.
• The EGS5 code proved effective for simulating complex decay processes.

Conclusions:

• The developed simulation technique is a reliable tool for the extrapolation method in 4πβ-γ coincidence counting.
• Simulation provides a powerful approach to understand and optimize coincidence counting parameters.
• This work contributes to improved accuracy in radioactivity measurements through advanced simulation.