| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 11001698 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2018 | 8 Pages |
Abstract
A tissue-equivalent TL dosimeter single crystal of Dy:LiKB4O7 (Dy:LKBO) was grown by the Czochralski technique. Phase purity of the grown crystal was confirmed by powder XRD analysis. The optical bandgap (Eg) of the grown crystal was calculated from UV-Vis-NIR spectral analysis to be 5.1â¯eV. Photoluminescence spectrum of Dy:LKBO crystal reveals prominent emission in green region when excited with UV light (346â¯nm). The grown crystal was subjected to γ-irradiation for dose ranges of 26, 52, 78, 104, 130 and 156â¯Gy using Co-60 source. The dose range was selected according to the personal and clinical requirements standards. The thermoluminescence analyses of γ-irradiated crystalline samples were performed; the glow curve measurement, fading effect, dose-response and reusability were analyzed and discussed in detail. The experimental results confirm that the Dy:LKBO single crystal can act as a potential material in TL dosimetry applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
N. Ravikumar, R. Arun Kumar, B.S. Panigrahi, U. Madhusoodanan, C.B. Palan, S.K. Omanwar,