An algorithm for unified analysis on the thermoluminescence glow curve |
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| Institution: | 1. The Research Institute of Natural Science and Department of Physics, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. Health Physics Team, Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon 305-600, Republic of Korea;1. Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden;2. Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;3. Research and Development Centre, Skaraborg Hospital, Skövde, Sweden;4. Department of Medicine, Skaraborg Hospital, Lidköping, Sweden;1. Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;2. Tokuyama Corp, 1-1 Mikage-cho, Shunan-shi, Yamaguchi 745-8648, Japan;3. Kyusyu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu-shi, Fukuoka 808-0196, Japan;4. Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;1. Clinic for Radiooncology, University of Saarland, Homburg, 66421, Germany;2. University of Nis, Faculty of Electronic Engineering, Aleksandra Medvedeva 14, 18000, Nis, Serbia;3. Vinca Institute of Nuclear Science, University of Belgrade, PO Box 522, 11001, Belgrade, Serbia;1. Laboratório de Qumica do Estado Sólido, Departamento de Qumica Fundamental – CCEN, Universidade Federal de Pernambuco, BR 101 s/n, 50670-901, Recife, PE, Brazil;2. Programa de Pós-graduacão em Ciência de Materiais – PPGMTR, CCEN, Universidade Federal de Pernambuco, BR 101 s/n, 50670-901, Recife, PE, Brazil;1. Nuclear Research Center Negev, Beersheva, Israel;2. Ben Gurion University of the Negev, Beersheva, Israel;3. Soreq Nuclear Research Center, Yavne 81800, Israel;4. Sami Shamoon College of Engineering, Beersheva 84100, Israel |
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| Abstract: | An algorithm was developed to integrally handle excitation by radiation, relaxation and luminescence by thermal or optical stimulation in thermoluminescence (TL) and optically stimulated luminescence (OSL) processes. This algorithm reflects the mutual interaction between traps through a conduction band. Electrons and holes are created by radiation in the beginning, and these electrons move to the trap through the conduction band. These holes move to the recombination center through a valence band. The ratio of the electrons allocated to each trap differs with the recombination probability and these values also relevant to the process of luminescence. Accordingly, the glow curve can be interpreted by taking the rate of electron–hole pairs created by ionizing radiation as a unique initial condition. This method differs from the conventional method of interpreting the measured glow curve with the initial electron concentration allocated to each trap at the end of irradiation. A program using the Visual Studio's C# subsystem was made to realize such a developed algorithm. To verify this algorithm it was applied to LiF:Mg,Cu,Si. The TL glow curve was deconvoluted with a model of five traps, one deep trap and one recombination center (RC). |
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| Keywords: | Thermoluminescence TL dosimetry Glow curve deconvolution |
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