The growth and scintillation properties of Cs2NaCeCl6 single crystal

In this paper, we report on the improved scintillation properties of Cs2NaCeCl6 crystal. The Cs2NaCeCl6 crystal was grown by the Czochralski technique in the dimensions of ⊘10×4 mm3. X-ray excited luminescence measurements of the Cs2NaCeCl6 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.