Novel Compton suppression equipment in γ-ray spectrometry with list mode data acquisition

Area of Science:

• Nuclear Physics
• Analytical Chemistry
• Radiation Detection

Background:

• Gamma spectrometry is crucial for nuclear safety and analysis.
• Improving sensitivity in low count-rate environments is a persistent challenge.
• Existing methods often struggle with complex spectra from multiple gamma-ray emitters.

Purpose of the Study:

• To develop and evaluate a novel Compton suppression device for enhanced gamma spectrometry.
• To create specialized software for analyzing list-mode data from multi-detector systems.
• To improve the sensitivity and accuracy of gamma measurements, particularly for low count-rate applications.

Main Methods:

• Development of a novel Compton suppression device utilizing gamma-gamma anticoincidence.
• Creation of custom software for sorting, visualizing, and analyzing list-mode data.
• Utilizing Geant4 simulations for device optimization, calibration, and complex analysis.
• Integration of the new setup with an existing laboratory information management system.

Main Results:

• The Compton suppression device reduces background by a factor of 3-10.
• The developed software enables restoration of true-coincidence losses for photo-peaks.
• Enhanced sensitivity is achieved in low count-rate gamma spectrometry.
• Geant4 simulations supported device optimization and calibration.

Conclusions:

• The novel Compton suppression system significantly enhances gamma spectrometry sensitivity.
• The integrated software simplifies data analysis and improves accuracy for complex samples.
• This advancement offers a more sensitive and efficient tool for radiation and nuclear safety measurements.