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​​Abstract

New single crystal of Ce-doped Tl2LiGdBr6 (TLGB) was investigated under x-ray and γ-ray excitation. Two zone vertical Bridgman technique was used to grow this scintillation material. Under X-ray excitation, typical Ce3+ ion emission was observed between 397 and 456 nm peaking at 422 nm. An energy resolution of 17% (FWHM) and 17,400 ± 1700 ph/MeV light yield was obtained for 662 keV γ-rays excitation. Under γ-rays excitation from a 137Cs source, two decay time components of 29 ns (92%) and 197 ns (8%) were found at room temperature. Further investigation is underway for the optimization of the Ce-concentration in the host lattice. We expect improvement in the scintillation properties with a good quality crystal of this material.

Highlights

•Scintillation properties of new Tl-based alkali halide eplasolite activated by Ce3+ are presented.

•This material is grown by two zone vertical Bridgman technique.

•It possessed high Z-number, high density, fast decay component and moderate light yield.

•Further improvements in the crystal quality could make this scintillator best choice for the use in medical imaging. 

Author information​​

H.J. Kima, Gul Roohb, H. Parka, Sunghwan Kimc

a Department of Physics, Kyungpook National University, Daegu 702-701, South Korea

b Department of Physics, Abdul Wali Khan University, Mardan 23200, Pakistan

c Department of Radiological Science, Cheongju University, Cheongju 360-764, South Korea