Investigation of a BeO-based optically stimulated luminescence dosemeter.
Radiat Prot Dosimetry
; 119(1-4): 394-7, 2006.
Article
em En
| MEDLINE
| ID: mdl-16735572
ABSTRACT
The optical sensitivity of BeO-based luminophors has been well-known for many years. The optical stimulation of BeO with blue light is most effective. Then the dosemeters emit luminescent light in the ultraviolet-range around 325 nm. Matched on these facts a simple optically stimulated luminescence (OSL) treatment has been developed. Intense blue light-emitting diodes are used for cw-stimulation. A Hamamatsu solar blind photomultiplier detects the OSL-light. Good separation of both spectral ranges by optical filters is very important. The dosemeter has a linear dose response between approximately 20 muGy and >10 Gy. It was suggested, that a modification of stimulation conditions would allow measurements down to 1 muGy. Fading, photon energy dependence and reproducibility of OSL-signal correspond well with requirements to clinical and personal dosemeters. In addition, basic questions of the OSL-process in BeO have been investigated. A relevant point of interest was the dependency of the OSL-signal on stimulation power.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dosimetria Termoluminescente
/
Berílio
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
/
Prognostic_studies
Idioma:
En
Revista:
Radiat Prot Dosimetry
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Alemanha