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Optical bleaching, TSL and OSL features of CVD diamond
M Benabdesselam1, P Iacconi, L Trinkler
1Laboratoire de Physique Electronique des Solides, centre de Recherche sur les Solides et leurs Applications, LPES-CRESA, EA 1174, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice cedex 2, France. ben@unice.fr
Radiation Protection Dosimetry
|March 28, 2006
Summary
Chemical vapour deposition (CVD) diamond shows promise for radiation dosimetry. However, its stored dose information is sensitive to ambient light, impacting its reliability for applications.
Area of Science:
- Materials Science
- Physics
- Analytical Chemistry
Background:
- Chemical vapour deposition (CVD) diamond is a promising material for ionizing radiation dosimetry.
- Previous research highlighted its excellent dosimetric properties.
Purpose of the Study:
- To investigate the luminescence and optical features of CVD diamond for radiation dosimetry.
- To understand the impact of ambient light on stored dose information.
Main Methods:
- Utilized thermally stimulated luminescence (TSL) and optically stimulated luminescence (OSL) techniques.
- Analyzed excitation and emission spectra.
- Investigated optical bleaching characteristics.
Main Results:
- CVD diamond is highly sensitive to ambient light after irradiation, affecting stored dose information.
- Both TSL and OSL processes share identical excitation and emission spectra.
- Optical bleaching stems from a continuous stimulation band across visible to near-infrared wavelengths.
Conclusions:
- While CVD diamond possesses good dosimetric potential, its sensitivity to light necessitates careful handling and consideration for practical applications.
- The identified optical bleaching mechanism provides insight into the limitations of CVD diamond in dosimetry.