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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
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Portable and Visualized X-ray Dose Rate Detection and Imaging Utilizing Br-Doped CsCdCl3 Crystals.

Hui Peng1, Linghang Kong1, Xiaokang Li1

  • 1Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.

ACS Applied Materials & Interfaces
|October 20, 2025
PubMed
Summary

This study introduces a portable, self-calibrated X-ray dose rate detector using Br-doped CsCdCl3 crystals. It offers real-time visualization and application in flexible films for imaging and dose detection.

Keywords:
Br-dopingX-ray dose rate detectorX-ray imagingmetal halideradioluminescence

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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.