Properties of the 4.45 eV optical absorption band in LiF:Mg,Ti
| Autor: | L. Oster, Y.S. Horowitz, Y. Belaish, S. Biderman, I. Nail |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Light Absorption spectroscopy Analytical chemistry chemistry.chemical_element Radiation Dosage Thermoluminescence Fluorides Optics Impurity Materials Testing Computer Simulation Magnesium Radiology Nuclear Medicine and imaging Irradiation Absorption (electromagnetic radiation) Titanium Radiation Radiological and Ultrasound Technology business.industry Public Health Environmental and Occupational Health Dose-Response Relationship Radiation Equipment Design General Medicine Equipment Failure Analysis Models Chemical chemistry Absorption band Lithium Compounds Thermoluminescent Dosimetry business Single crystal |
| Zdroj: | Radiation Protection Dosimetry. 119:244-247 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/nci616 |
| Popis: | The optical absorption (OA) and thermoluminescence (TL) of dosimetric LiF:Mg,Ti (TLD-100) as well as nominally pure LiF single crystal have been studied as a function of irradiation dose, thermal and optical bleaching in order to investigate the role of the 4.45 eV OA band in low temperature TL. Computerised deconvolution was used to resolve the absorption spectrum into individual gaussian bands and the TL glow curve into glow peaks. Although the 4.45 eV OA band shows thermal decay characteristics similar to the 4.0 eV band its dose filling constant and optical bleaching properties suggest that it cannot be associated with the TL of composite peaks 4 or 5. Its presence in optical grade single crystal LiF further suggests that it is an intrinsic defect or possibly associated with chance impurities other than Mg, Ti. |
| Databáze: | OpenAIRE |
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