Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO4 Crystal Rods Grown by Micro-Pulling-Down Method
| Autor: | Łukasz Boron, Paweł Bilski, Wojciech Gieszczyk, Mariusz Kłosowski, Marzanna Książek, B. Marczewska |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Optically stimulated luminescence Scanning electron microscope TL Analytical chemistry chemistry.chemical_element 02 engineering and technology Thermoluminescence lcsh:Technology Article 030218 nuclear medicine & medical imaging Crystal 03 medical and health sciences 0302 clinical medicine General Materials Science OSL lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Micro-pulling-down 021001 nanoscience & nanotechnology Microstructure LiMgPO4 crystals Thulium chemistry lcsh:TA1-2040 micro-pulling-down method lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology Luminescence lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 Tm or Tb doping |
| Zdroj: | Materials, Vol 14, Iss 132, p 132 (2021) Materials Volume 14 Issue 1 |
| ISSN: | 1996-1944 |
| Popis: | The purpose of this work was to systematically assess the distribution of thermoluminescence (TL) and optically stimulated luminescence (OSL) properties along the length of crystals grown by the micro-pulling-down method, in relation to the microstructure and distribution of activators. We analyzed lithium magnesium phosphate (LiMgPO4 LMP) crystals doped with terbium (Tb 0.8 mol%) or with a combination of thulium (Tm 0.8 mol% or 1.2 mol%) and boron (B 10 mol%). Crystals of several centimeters in length and 3 mm in diameter were cut into 20&ndash 40 slices, depending on length. For each sample, TL glow curves and OSL decay curves were examined. Optical microscopy and scanning electron microscopy were used to assess the microstructure and elemental composition of several selected samples. Two-dimensional TL readouts were performed to identify the areas with higher and lower signal emission. Our study showed that there may be significant differences not only in LMP sensitivity along the crystal&rsquo s axis but also on the surface of the slice. The distribution of activators varies depending on the type of crystals and strongly affects luminescence properties. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|