首页|The Growth and Characterization of the Cerium Contained Inorganic Halide Scintillators
The Growth and Characterization of the Cerium Contained Inorganic Halide Scintillators
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NETL
NSTL
Trans Tech Publications Ltd
A report on the crystal growth, luminescence and scintillation characteristics of two developed scintillators, CsCe_2Cl_7 and Cs_2NaCeCl_6 are presented. CsCe_2Cl_7 is a new scintillation material. These crystals were grown by the Czochralski pulling technique. The X-ray diffraction technique was used to verify the structure of crystals. Under the X-ray excitation emission, the CsCe_2Cl_7 showed a broad emission band in the wavelength range from 370 to 470 nm while the Cs_2NaCeCl_6 crystal showed a spectrum in the wavelength range from 370 to 440 nm. The energy resolutions (FWHM of peak position) for the 662 keV full energy peak of 5.5% and 8.3% were observed at room temperature for the CsCe_2Cl_7 and Cs_2NaCeCl_6 crystals, respectively. The scintillation decay time measurement curves showed that, CsCe_2Cl_7 crystal has a single exponential decay function with a decay time of 50 ns. The Cs_2NaCeCl_6 crystal exhibited three main decay time components, a short component with a decay time constant of 91 ns and 36% intensity, an intermediate component with a decay time constant of 601 ns and intensity 33%, followed by a long component with a 3.2 μs decay time constant and an intensity of 31% of the total light yield. On the basis of the scintillation results of these materials grown, it is believe that these scintillation crystals can find a place in medical imaging and radiation detection system.
NETL
NSTL
Trans Tech Publications Ltd
