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Dosimetry for Cell Irradiation using Orthovoltage 40-300 kV X-Ray Facilities
Published on: February 20, 2021
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Visualized X-ray Dosimetry for Multienvironment Applications
Lan Lu1, Songcheng Peng1, Lei Zhao2
1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China.
Nano Letters
|September 15, 2023
Summary
This study introduces a novel visual X-ray dosimetry method using nanocrystals that change color upon irradiation. This allows for immediate and delayed radiation detection, enhancing safety in various applications.
Area of Science:
- Materials Science
- Nanotechnology
- Radiochemistry
Background:
- X-ray dose detection is crucial across chemistry, materials science, and medicine.
- Existing dosimetry materials struggle with both immediate and delayed radiation detection.
Purpose of the Study:
- To develop a visual X-ray dosimetry method for diverse applications.
- To utilize NaLuF4 nanocrystals for colorimetric and mechanoluminescent X-ray detection.
Main Methods:
- Synthesized NaLuF4 nanocrystals doped with Ho3+.
- Investigated X-ray-induced color change (green to red) via concentration tuning.
- Observed mechanoluminescence (ML) generation post-irradiation due to induced trapping centers.
Main Results:
- NaLuF4:Ho3+ nanocrystals exhibit a visual color change upon X-ray exposure.
- Ho3+ concentration tuning controls emission color through cross-relaxation.
- X-ray irradiation creates trapping centers, enabling dose-dependent ML for delayed detection.
Conclusions:
- Developed a dual-mode (visual and ML) X-ray dosimeter.
- The method offers immediate and delayed radiation detection capabilities.
- Potential applications include flaw detection, nuclear medicine, customs, and civil protection.
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