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Application of jade samples for high-dose dosimetry using the EPR technique
Maria Inês Teixeira1, Adeilson P Melo, Gilberto M Ferraz
1Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear, São Paulo, Brazil. miteixei@ipen.br
Jade samples show potential for high-dose dosimetry. Electron paramagnetic resonance (EPR) revealed dose-dependent signals, indicating suitability for measuring absorbed radiation doses.
Area of Science:
- Geological Sciences
- Materials Science
- Radiation Physics
Background:
- Jade, a term encompassing jadeite and actinolite silicates, is explored for its potential in radiation dosimetry.
- High-dose dosimetry is crucial for applications such as radiation processing and accident dosimetry.
Purpose of the Study:
- To investigate the dosimetric characteristics of jade samples for high-dose applications.
- To evaluate the suitability of jade as a passive dosimeter material.
Main Methods:
- Jade samples (jadeite and actinolite) were irradiated with absorbed doses ranging from 100 Gy to 20 kGy.
- Electron Paramagnetic Resonance (EPR) spectroscopy was used to analyze the dosimetric properties of the irradiated samples.
- Key dosimetric properties including reproducibility, calibration curves, and energy dependence were investigated for USA jade samples.
Main Results:
- Irradiated jade samples exhibited EPR signals that increased proportionally with the absorbed dose.
- These signals, with g-factors around 2.00, are attributed to electron centers formed within the silicate structure.
- The study characterized the reproducibility, calibration curves, and energy dependence of EPR signals in USA jade samples.
Conclusions:
- Jade samples demonstrate promising dosimetric characteristics for high-dose applications.
- The dose-dependent EPR signals in jade suggest its potential as a reliable and sensitive radiation dosimeter.
- Further investigation into the dosimetric properties of various jade types could lead to practical applications in radiation measurement.
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