{"title":"Scintillation properties of Eu3+ doped Lu3Al5O12 single crystals","authors":"Toshiaki Kunikata , Kenichi Watanabe , Hiromi Kimura , Kai Okazaki , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida","doi":"10.1016/j.solidstatesciences.2025.107902","DOIUrl":null,"url":null,"abstract":"<div><div>Lutetium aluminum garnet single crystals doped with different concentrations of Eu (0.5, 1.0, 5.0, 10.0, 15.0 %) were grown using the floating zone method, and their optical and scintillation properties were investigated. Several sharp peaks due to 4f-4f transitions of Eu<sup>3+</sup> ions were observed at 580–710 nm in photoluminescence (PL) and scintillation spectra, and the PL and scintillation decay times were estimated to be 2.9–3.8 ms. We measured the pulse height spectra under γ-ray irradiation from <sup>137</sup>Cs (662 keV) using the setup for scintillators with slow decay times, and the light yields of the samples were estimated. The 5.0 % Eu-doped lutetium aluminum garnet sample showed the highest light yield of 30,000 photons/MeV among the samples.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107902"},"PeriodicalIF":3.3000,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Sciences","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1293255825000809","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Lutetium aluminum garnet single crystals doped with different concentrations of Eu (0.5, 1.0, 5.0, 10.0, 15.0 %) were grown using the floating zone method, and their optical and scintillation properties were investigated. Several sharp peaks due to 4f-4f transitions of Eu3+ ions were observed at 580–710 nm in photoluminescence (PL) and scintillation spectra, and the PL and scintillation decay times were estimated to be 2.9–3.8 ms. We measured the pulse height spectra under γ-ray irradiation from 137Cs (662 keV) using the setup for scintillators with slow decay times, and the light yields of the samples were estimated. The 5.0 % Eu-doped lutetium aluminum garnet sample showed the highest light yield of 30,000 photons/MeV among the samples.
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