Investigation of the optical absorption dose response of LiF:Mg,Ti (TLD-100) and the role of V centers in F center (5.08 eV) bleaching |
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| Affiliation: | 1. Ben Gurion University of the Negev, 84105 Beersheva, Israel;2. Soreq Nuclear Research Center, 81800 Yavne, Israel;3. Sami Shamoon College of Engineering, 84100, Beersheva, Israel;4. Nuclear Research Center Negev, Beersheva, Israel;1. Ural Federal University, 19 Mira Str., 620002, Ekaterinburg, Russia;2. Physics Department, McDaniel College, Westminster, MD, 21157, USA;1. Department of Radiation Oncology, DeCesaris Cancer Institute, Anne Arundel Medical Center, Annapolis, Maryland;2. Department of Radiation Oncology, Henry Ford Health Systems, Detroit, Michigan;3. Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota;4. Department of Radiation Oncology, Washington University in St. Louis School of Medicine, St. Louis, Missouri;6. Department of Radiation Oncology, Karmanos Cancer Center, Detroit Medical Center, Detroit, Michigan;5. Department of Radiation Oncology, University of North Carolina Lineberger Comprehensive Cancer Center, Chapel Hill, North Carolina;7. Department of Radiation Oncology, Gamma West Cancer Services, Ogden, Utah;11. Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York;12. Department of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, Texas;1. Département des sciences de la Terre et de l''atmosphère, Université du Québec à Montréal, CP 8888 Succ. Centre-Ville, Montréal, Qc H3C 3P8, Canada;2. IRAMAT-CRP2A, UMR 5060 CNRS – Université de Bordeaux3 – Maison de l’Archéologie, 33607 Pessac, France;1. School of Physics (A28), The University of Sydney, NSW 2006, Australia;2. West German Proton Therapy Centre Essen, Hufeland Straße 55, D-45147 Essen, Germany;1. Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel;2. Physics Department, McDaniel College, Westminster, MD 21157, USA;3. Redwood Scientific Incorporated, Pacifica, CA 94044-4300, USA |
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| Abstract: | The optical absorption (OA) dose response of irradiated LiF:Mg,Ti has been measured over the dose range from 100 Gy to 1.4 M Gy. Measurements at high dose indicate that the 4.0 eV band is actually a composite band at 3.84 eV and 4.3 eV. Bleaching experiments at 5.08 eV (F band) support the participation of V3 centers in the relaxation mechanisms following the bleach. The results are interpreted in the framework of a spatially correlated trapping center/luminescent center giving rise to composite peak 5 in the glow curve. |
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| Keywords: | Optical bleaching OA dose response TL mechanism |
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