Portable and Visualized X-ray Dose Rate Detection and Imaging Utilizing Br-Doped CsCdCl₃ Crystals

Area of Science:

• Materials Science
• Radiation Detection
• Solid-State Physics

Background:

• X-ray detectors are crucial for various applications but require expensive equipment and complex calibration for dose rate measurement.
• Current methods for detecting X-ray radiation dose rates are often costly and involve intricate calibration processes.

Purpose of the Study:

• To develop a portable, visualized, and self-calibrated real-time X-ray dose rate detector.
• To utilize the unique dual-emission properties of Br-doped CsCdCl3 crystals for radiation detection.

Main Methods:

• Fabrication of Br-doped CsCdCl3 crystals exhibiting dual-emission bands.
• Exploitation of the dual radioluminescence response under X-ray excitation for self-calibration.
• Real-time dose rate visualization using smartphone photography and color coordinate extraction.
• Integration of Br-doped CsCdCl3 powders into flexible polymer films.

Main Results:

• A self-calibrated X-ray dose rate detector was constructed based on the intensity ratio of dual radioluminescence peaks (480 nm and 595 nm).
• The detector achieved a high relative sensitivity of 6% (mGyair s-1)-1 at 0.6 mGyair s-1.
• Real-time visualization of X-ray dose rates was successfully demonstrated using smartphone imaging.
• Demonstrated potential for simultaneous X-ray imaging and dose rate detection using flexible films.

Conclusions:

• Br-doped CsCdCl3 crystals offer a promising material for developing advanced, self-calibrated X-ray dose rate detectors.
• The developed detector is portable, visualized, and cost-effective, overcoming limitations of existing technologies.
• The material's dual-emission property enables self-calibration, simplifying the detection process.
• Flexible films containing the material show potential for combined imaging and dose monitoring applications.