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Phase-Separated CsI-NaCl Scintillator With Optical Guiding Function

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5 Author(s)
Toru Den ; Frontier Research Center, Canon Inc., Tokyo, Japan ; Tatsuya Saito ; Ryoko Horie ; Yoshihiro Ohashi
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We demonstrate a new scintillator material that has a one-dimensional eutectic structure and optical light-guiding properties. Our light propagation calculations predicted that a structure where high refractive index luminescence cylinders are embedded in a matrix should show effective light-guiding properties. An inverse structure where a high refractive index luminescence matrix contains low refractive index cylinders was also predicted to possess light-guiding properties. A CsI-NaCl:Tl eutectic phase, which contained NaCl cylinders in a CsI matrix, was grown by a one-dimensional solidification method. This material showed high spatial resolution because of the difference in the refractive indices of NaCl and CsI.

Published in:

IEEE Transactions on Nuclear Science  (Volume:60 ,  Issue: 1 )