Scintillation properties and X-ray irradiation hardness of Ce³⁺-doped Gd₂O₃-based scintillation glass

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• 作者：Liwan Liu^a ; ^b ; Chongyun Shao^a ; ^b ; Yu Zhang^a ; ^c ; Xili Liao^a ; ^b ; Qiuhong Yang^b ; Lili Hu^a ; Danping Chen^a ; ^{d-chen@mail.siom.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Scintillation glass ; Gd2O3 based ; Charge transfer quenching ; Irradiation hardness
• 刊名：Journal of Luminescence
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：176
• 期：Complete
• 页码：1-5
• 全文大小：1147 K

文摘

Ce³⁺-doped Gd₂O₃-based scintillation glasses are prepared within an air or CO atmosphere. The effects of fluorine, lutetium, barium, and the melting atmosphere on the optical properties, scintillation properties and irradiation hardness are studied. Absorption spectra, luminescence spectra under UV and X-ray excitation, and the X-ray radiation-induced spectra are presented. The results show that the density can be increased by doping with fluorine, lutetium and barium. The luminescence intensity decreases after X-ray irradiation. Because of charge transfer quenching, fluorine and lutetium enhance the UV-excited and X-ray excited luminescence intensity, but barium decreases. Moreover, fluorine and lutetium are advantageous to irradiation hardness while barium is not. In addition, a non-reducing atmosphere provides a higher irradiation hardness than a reducing atmosphere. Fluorine-doped glass is promising to enhance luminescence intensity, promote irradiation hardness, and increase the density.