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Optical, scintillation and thermoluminescent properties of Eu2O3-doped K2O–La2O3–Ga2O3 glasses
Radiation Physics and Chemistry ( IF 2.8 ) Pub Date : 2021-09-08 , DOI: 10.1016/j.radphyschem.2021.109785
Naoki Kawano 1 , Kenji Shinozaki 2 , Daisuke Nakauchi 3 , Hiromi Kimura 3 , Masaki Akatsuka 3 , Takayuki Yanagida 3
Affiliation  

Glasses are promising functional materials as phosphors with an aim to use in radiation measurements because of easy shaping, low fabrication cost and large volume fabrication possibility. In this study, Eu3+-activated gallate glasses having glass compositions of 20K2O–11La2O3–(69−x)Ga2O3–xEu2O3 (x = 0.1–1.0) were synthesized, and their photoluminescence, scintillation and thermoluminescent characteristics were investigated. Clear luminescence peaks at around 574, 591, 614, 653 nm ascribed to the electronic 4f-4f transitions of Eu3+ appeared when the Eu2O3-doped gallate glasses were irradiated by visible light and high energy X-ray. The photoluminescence and scintillation intensities of the 0.5% Eu2O3-doped gallate glass were found to be the highest. Furthermore, a thermoluminescent glow peak appeared at around 90 °C in the glow curve. The 0.1% Eu2O3-doped gallate glass showed the highest glow peak intensity unlike photoluminescence and X-ray induced scintillation spectra, suggesting that the Eu2O3-doped gallate glasses showed a complimentary relationship between scintillation and thermoluminescent intensities.



中文翻译:

Eu2O3 掺杂 K2O-La2O3-Ga2O3 玻璃的光学、闪烁和热释光特性

由于易于成型、制造成本低和大批量制造的可能性,玻璃是作为荧光粉的有前途的功能材料,旨在用于辐射测量。在本研究中,合成了玻璃成分为 20K 2 O–11La 2 O 3 –(69-x)Ga 2 O 3 –xEu 2 O 3 (x = 0.1–1.0) 的Eu 3+活化镓酸盐玻璃,并合成了它们的研究了光致发光、闪烁和热致发光特性。当 Eu 2 O 3出现时,Eu 3+的电子 4f-4f 跃迁出现在574、591、614、653 nm 附近的清晰发光峰掺杂镓酸盐玻璃用可见光和高能 X 射线照射。发现0.5% Eu 2 O 3掺杂的镓酸盐玻璃的光致发光和闪烁强度最高。此外,在辉光曲线中,在 90°C 左右出现了热释光辉光峰。与光致发光和 X 射线诱导的闪烁光谱不同,0.1% Eu 2 O 3掺杂的镓酸盐玻璃显示出最高的辉光峰强度,表明 Eu 2 O 3掺杂的镓酸盐玻璃在闪烁和热致发光强度之间显示出互补关系。

更新日期:2021-09-13
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