Abstract
In this paper, we report on the improved scintillation properties of Cs 2NaCeCl 6 crystal. The Cs 2NaCeCl 6 crystal was grown by the Czochralski technique in the dimensions of ⊘10×4 mm 3. X-ray excited luminescence measurements of the Cs 2NaCeCl 6 crystal showed a doublet emission spectrum in the wavelength range from 370 to 440 nm, peaking at 380 and 410 nm. An energy resolution (FWHM of peak position) for the 662-keV full energy peak of 8.3% was observed at room temperature. The scintillation properties were studied by using different gamma ray sources. We measured an absolute light yield of 20,000 photons/MeV of absorbed γ-ray energy. The crystal shows three main scintillation decay time components of 91 ns (36%), 601 ns (33%) and 3.2 μs (31%). The results show a good proportionality for light output versus γ-ray energy. The light output deviates from the linear response of 8% between the measured range of energy.
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