Investigations of OSL properties of LiMgPO4:Tb,B based dosimeters |
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| Institution: | 1. School of Material Science and Engineering, University of Jinan, Jinan 250022, China;2. Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China;1. Health Safety and Environment Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;2. Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;1. Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, Krakow, Poland;2. Institute of Applied Radiation Chemistry, Lodz University of Technology, Wroblewskiego 15, Lodz, Poland;1. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;2. Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India |
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| Abstract: | Lithium magnesium phosphate LiMgPO4 (LMP) doped with Tb and B is one of new materials intended for use in optically stimulated luminescence (OSL) dosimetry. LMP doped with Tb and B luminophors were synthetized at IFJ PAN in Krakow. The investigations were carried out on self-developed dosimeters consisting of a slide with four LMP detectors and a light tight cover. LMP detectors were investigated in regard to their OSL properties using OSL reader named HELIOS adopted to the readouts of dosimetric cards. New LMP detectors showed high sensitivity to the ionizing radiation, good repeatability of OSL signal and good dose response, 25% of fading in the first two weeks after irradiation. Also, the pronounced dependence of OSL response on the energy of the measured radiation requires to apply the compensation filters. |
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| Keywords: | Optically stimulated luminescence Luminophor Dosimeter OSL reader |
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