Growth and scintillation properties of Tl-doped CsI/CsCl/NaCl ternary eutectic scintillators

Tl:CsI/CsCl/NaCl eutectic scintillators were grown by the Bridgman-Stockbarger method. The eutectic phases were uniformly distributed in the transverse direction and slightly aligned along the growth direction. Then, the CsI phase can be designed as columnar. The expected emission peak observed at 5...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2021-05, Vol.60 (SB), p.SBBK01
Main Authors: Takizawa, Yui, Kamada, Kei, Yoshino, Masao, Yamaji, Akihiro, Kurosawa, Shunsuke, Yokota, Yuui, Sato, Hiroki, Toyoda, Satoshi, Ohashi, Yuji, Hanada, Takashi, Kochurikhin, Vladimir. V., Yoshikawa, Akira
Format: Article
Language:English
Subjects:
Bridgman method
Cathodoluminescence
Crystal growth
Eutectic
Eutectics
Excitons
Laser microscopy
Light emission
Radiation imaging
Scintillation counters
Scintillators
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Summary:Tl:CsI/CsCl/NaCl eutectic scintillators were grown by the Bridgman-Stockbarger method. The eutectic phases were uniformly distributed in the transverse direction and slightly aligned along the growth direction. Then, the CsI phase can be designed as columnar. The expected emission peak observed at 550 nm was observed under X-ray excitation and cathodoluminescence and was ascribed to the self-trapped exciton perturbed by TI+ in Tl:CsI. The mapping of optically waveguided light emission was observed by confocal laser microscopy, consequently optical waveguiding of Tl+ emission in the CsI phase was demonstrated.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/abcdab