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Commercial optical fibre as TLD material.
G Espinosa1, J I Golzarri, J Bogard
1Instituto de Física, UNAM. Apartado Postal 20-364, México, D.F., Mexico. espinosa@fisica.unam.mx
Radiation Protection Dosimetry
|May 20, 2006
Summary
Commercial SiO2 optical fibers show promising thermoluminescence (TL) properties for radiation detection. Their linearity, reproducibility, and reusability make them ideal for TL dosimetry applications in various fields.
Area of Science:
- Materials Science
- Radiation Physics
- Dosimetry
Background:
- Development of novel radiation detection materials is crucial for accurate dosimetry.
- Commercial silica (SiO2) optical fibers are being investigated for their potential in radiation detection.
Purpose of the Study:
- To evaluate the thermoluminescence (TL) properties of commercial SiO2 optical fibers.
- To assess their suitability for use in ionizing radiation dosimetry.
Main Methods:
- Exposure of SiO2 optical fibers to 60Co gamma radiation.
- Analysis of glow curves between 30 and 400 degrees C.
- Dose-response characterization from 0.1 Gy to several kGy.
Main Results:
- A distinct glow peak was observed at 230 degrees C.
- Monotonic TL response from 100 to 350 degrees C over a wide dose range.
- Linear response observed between 0.1 and 3 Gy, crucial for clinical and accident dosimetry.
- High reproducibility, low residual signal, and minimal fading demonstrated.
- The optical fibers showed reusability after thermal annealing without performance degradation.
Conclusions:
- Commercial SiO2 optical fibers exhibit excellent TL properties for radiation dosimetry.
- Their small size, flexibility, low cost, and robust performance make them highly promising for diverse applications.
- These fibers represent a viable alternative to conventional TL materials in research, medicine, industry, and nuclear settings.