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Study on Crystal Growth and Scintillation Characteristics of Cs _{2} LiCeCl _{6}

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3 Author(s)
Gul Rooh ; Department of Physics, , Kyungpook National University, Daegu, Republic of Korea ; H. J. Kim ; Sunghwan Kim

In this work, we present the crystal growth and scintillation properties of our newly developed scintillation crystal, Cs2 LiCeCl6, for a γ-ray spectroscopy. This scintillation crystal is grown by using the vertical Bridgman method. The crystal of this material belongs to the elpasolite family characterized by a cubic structure and potentially can be easily grown in large volumes. Under the X-ray excitation, cerium emission band is observed to peak at 385 nm and 405 nm. An energy resolution (full width at half maximum over the peak position) of 5.5% was observed for the 662 keV full absorption peak. We measured an absolute light yield of 22 000 photons/MeV of absorbed η -ray energy. The crystal shows three main scintillation decay time components of 101 ns (42%), 557 ns (35%) and 2.9 μs (23%). This material is highly hygroscopic and special attention was paid during data taking and handling processes. We believe that the Cs2 LiCeCl6 crystal can be a promising material for medical imaging and radiation detection. Moreover due to the presence of Li ions, this scintillation crystal can also be a possible candidate for thermal neutron detection.

Published in:

IEEE Transactions on Nuclear Science  (Volume:57 ,  Issue: 3 )