FADING EFFECT OF LiF:Mg,Ti AND LiF:Mg,Cu,P Ext-Rad AND WHOLE-BODY DETECTORS
| Autor: | Maria Da graça saraiva, S. Rangel, M. Pereira, Joao G. Alves, Joana Pereira, L. M. Santos, J. V. Cardoso |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Time Factors Analytical chemistry Radiation Dosage Signal Thermoluminescence Whole-Body Counting 030218 nuclear medicine & medical imaging 03 medical and health sciences Fluorides 0302 clinical medicine Radiation Protection Radiation Monitoring Humans Radiology Nuclear Medicine and imaging Thermal stability Magnesium Observer Variation Titanium Radiation Dosimeter Radiological and Ultrasound Technology Radiation Dosimeters Detector Public Health Environmental and Occupational Health Temperature Phosphorus General Medicine Environmental exposure Environmental Exposure Atmospheric temperature range 030220 oncology & carcinogenesis Measuring instrument Lithium Compounds Thermoluminescent Dosimetry |
| Zdroj: | Radiation protection dosimetry. 170(1-4) |
| ISSN: | 1742-3406 |
| Popis: | Thermoluminescence dosemeters are widely used in individual and environmental monitoring. The aim of this work was to compare the thermal stability of dosemeters of the Ext-Rad and whole-body card types with LiF:Mg,Ti and LiF:Mg,Cu,P detectors stored at different temperatures and periods. The dosemeters were stored at 0°C, room temperature and 40°C for periods that lasted 8, 30, 45, 90 and 120 d. In general, TLD-100H detectors present higher TL signal stability than TLD-100 detectors. The intensity of the signal remained constant for both materials for storage periods at 0°C. At RT the same results was observed for TLD-100H. For TLD-100 detectors, a maximum variation of 22 % was registered for the longest period. At 40°C the TL signal decreased with storage time for both detectors. The TL signal of TLD-100H detectors presented maximum variations of 12 % whereas for TLD-100 detectors, larger variations of 25 % were observed. |
| Databáze: | OpenAIRE |
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