Temperature dependence of radio- and photoluminescence and scintillation properties of Y0.6Gd2.4Al2Ga3O12:Ce,Mg single crystal

Journal article

Authors/Editors

Strategic Research Themes

Smart Healthcare (Strategic Research Themes)

Publication Details

Author list: Warut Chewpraditkul, Nakarin Pattanaboonmee, Weerapong Chewpraditkul, Kyoung Jin Kim, Akira Yoshikawa, Kei Kamada, Shunzuke Kurosawa, Alena Beitlerova, Romana Kucerkova, Vladimir Babin, Martin Nikl

Publisher: Elsevier

Publication year: 2022

Volume number: 131

ISSN: 0925-3467

eISSN: 1873-1252

URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-85133784057&origin=resultslist&sort=plf-f&src=s&st1=Temperature+dependence+of+radio-+and+photoluminescence+and+scintillation&sid=d17ee8ccd52cc805d9d4a5d2ccb328e7&sot=b&sdt=b&sl=87&s=TITLE-ABS-KEY%28Temperature+dependence+of+radio-+and+photoluminescence+and+scintillation%29&relpos=0&citeCnt=0&searchTerm=&featureToggles=FEATURE_NEW_DOC_DETAILS_EXPORT:1,FEATURE_EXPORT_REDESIGN:1

Languages: English-United States (EN-US)

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Abstract

Mg2+-codoped Y0.6Gd2.4Al2Ga3O12:Ce (YGAGG:Ce,Mg) single crystal was grown by the Czochralski method and
its luminescence and scintillation properties were investigated. Temperature dependence of radioluminescence
(RL) yield and photoluminescence (PL) decay time was measured, and activation energy of thermal ionization
process was determined from temperature-dependent PL decay time measurement. YGAGG:Ce,Mg exhibited high
X-ray excited RL yield almost 5 times higher than BGO reference scintillator. Its light yield of 41,500 ph/MeV and
scintillation decay times of 12 ns (2%) + 52 ns (65%) + 207 ns (33%) were measured under excitation with 662
keV γ rays from 137Cs source. Afterglow and thermally stimulated luminescence characteristics are also
investigated

Keywords

Luminescence, Scintillation