Optical bleaching, TSL and OSL features of CVD diamond.
Luminescence and optical features of chemical vapour deposition (CVD) diamond have been studied in view of the potential application of this material in ionising radiation dosimetry field. For this purpose, thermally stimulated luminescence (TSL) and optically stimulated luminescence (OSL) techniques have been used. A large amount of work has emphasised the excellent dosimetric properties of CVD diamond. Nevertheless, TSL measurements showed that after irradiation, this material is extremely sensitive to ambient light and the stored dose information is drastically affected by optical bleaching. From OSL analysis, it follows that both types of processes (TSL and OSL) were characterised by the same excitation and emission spectra and that optical bleaching originated from a broad stimulation band lying from visible to near infrared with a continuous character.
Laboratoire 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
M
M
Benabdesselam
P
P
Iacconi
L
L
Trinkler
B
B
Berzina
J E
JE
Butler
D003198:Computer Simulation; D018130:Diamond / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008956:Models, Chemical; D011829:Radiation Dosage; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods*
D018130:Diamond