Study on bubble detectors used as personal neutron dosimeters

Area of Science:

• * Nuclear physics and radiation detection.
• * Dosimetry and radiation protection.

Background:

• * Neutron bubble detectors are the sole personal neutron dosimeters meeting ICRP 60 energy response criteria.
• * Effective monitoring of personal neutron dose is crucial in various radiation environments.

Purpose of the Study:

• * To present studies on neutron bubble detector manufacture, calibration, and on-site testing.
• * To evaluate the performance and suitability of neutron bubble detectors for personal neutron dose monitoring.

Main Methods:

• * Manufacturing of neutron bubble detectors.
• * Calibration using established laboratory equipment.
• * On-site testing in relevant radiation fields.
• * Evaluation of sensitivity, dose response correlation, consistency, and reproducibility.

Main Results:

• * Achieved a maximum sensitivity of approximately 4 bubbles/μSv.
• * Demonstrated a high correlation coefficient (0.99) for dose response.
• * Confirmed in-batch consistency and reproducibility meeting ISO standards.
• * On-site tests showed consistency within 15% relative standard uncertainty.

Conclusions:

• * Neutron bubble detectors are highly effective for personal neutron dosimetry.
• * Their portability and direct readability make them ideal for on-site monitoring in n-γ mixed fields.
• * The detectors meet rigorous international standards for accuracy and reliability.