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arXiv · 1709.04975

The Characterization of new Eu2+ doped TlSr2I5 Scintillator Crystals

H. J. Kim·Gul Rooh·Arshad Khan·H. Park·Sunghwan Kim
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Abstract

TlSr2I5: Eu2+ is a newly discovered scintillator and show promising scintillation properties for X- and {\gamma}-rays spectroscopy applications. Two zones vertical Bridgman technique is used for the growth of this scintillator. Luminescence properties of the grown crystals are measured under X-ray excitation at room temperature. Pure and Eu2+ doped crystals contained broad emission bands between 445-670 nm peaking at 528 nm and 430-600 nm peaking at 463 nm, respectively. Energy resolution, light yield and decay time profiles are studied under 662 keV {\gamma}-ray excitation using 137Cs radioactive source. Energy resolution of 4.2 % (FWHM) is obtained for 3 mol% Eu2+ doped crystal. For the same sample, light yield of 70,000 ph/MeV is also obtained. Three and two decay constants are observed for the pure and Eu2+ doped samples, respectively at room temperature. Effective Z-number and density are found to be 61 and 5.30 g/cm3, respectively.

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H. J. Kim, Gul Rooh, Arshad Khan, H. Park, Sunghwan Kim. 2017-09-09. The Characterization of new Eu2+ doped TlSr2I5 Scintillator Crystals. https://arxiv.org/abs/1709.04975

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