Investigation of a BeO-based optically stimulated luminescence dosemeter
| Autor: | M. Sommer, Juergen Henniger |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Photomultiplier
Materials science Light Optically stimulated luminescence Radiation Photon energy Radiation Dosage Sensitivity and Specificity Optics Materials Testing Computer Simulation Radiology Nuclear Medicine and imaging Optical filter Diode Reproducibility Radiological and Ultrasound Technology business.industry Public Health Environmental and Occupational Health Reproducibility of Results Dose-Response Relationship Radiation Equipment Design General Medicine Equipment Failure Analysis Models Chemical Optoelectronics Thermoluminescent Dosimetry Beryllium business Luminescence |
| Zdroj: | Radiation Protection Dosimetry. 119:394-397 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/nci626 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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