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Dosimetric properties of KMgF3:Tb + PTFE
M I Ramírez-Romero1, L García-Salinas1, M Villicaña-Méndez1
1Faculty of Chemical Engineering, UMSNH, Francisco J. Mújica S/N, Ciudad Universitaria, Col. Felicitas del Río, C.P. 58030 Morelia, Mich., Mexico.
Summary
New KMgF3:Tb+PTFE radiation detectors show linear thermoluminescence response from 1 to 1000 Gy. These dosimeters offer excellent repeatability and minimal fading, making them suitable for clinical radiation dosimetry applications.
Area of Science:
- Materials Science
- Radiation Detection
- Dosimetry
Background:
- Development of novel radiation detectors is crucial for accurate dosimetry.
- Thermoluminescent materials offer promising properties for radiation detection.
Purpose of the Study:
- To investigate the dosimetric properties of new KMgF3:Tb+PTFE radiation detectors.
- To evaluate the performance of these detectors for radiation dosimetry applications.
Main Methods:
- KMgF3:Tb was synthesized using a microwave technique.
- Polycrystalline powder was mixed with polytetrafluoroethylene (PTFE) resin (2:3 ratio) to form pellet dosimeters.
- Thermoluminescent response was measured using 60Co gamma radiation.
Main Results:
- The KMgF3:Tb+PTFE detectors exhibited a linear thermoluminescent response in the dose range of 1-1000 Gy.
- Repeatability tests over ten cycles showed a standard deviation of ±3.7%.
- Long-term stability tests (two months) indicated practically null signal fading.
Conclusions:
- The new KMgF3:Tb+PTFE detectors demonstrate excellent dosimetric properties.
- These detectors are highly suitable for radiation dosimetry, particularly in clinical settings.
- The material's linearity, repeatability, and stability suggest a promising future in radiation measurement.
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