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Scintillation properties of BaO-TiO2-GeO2-SiO2 glass-ceramics

机译:BaO-TiO2-Geo2-SiO2玻璃陶瓷的闪烁性能

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摘要

We have investigated photoluminescence (PL) and scintillation properties of 30BaO-15TiO(2)-(55-x)GeO2-xSiO(2) (BTGSx: x = 0, 13.75, 25, 30, 41.25 and 55) glasses and glass-ceramics prepared by the conventional melt quenching method. In the PL spectra of all the samples, an emission band was observed around 490 nm. In addition, another emission band was detected around 530 nm in the BTGS30, BTGS25, BTGS13.75 and BTG55 glass-ceramics. From the PL decay time constants, the emission bands at 490 and 530 nm were confirmed to be due to the T-3(1)-(1)A(1) transition of Ti4+ ions and E-2-T-2(2g) transition of Ti3+ ions, respectively. The quantum yields of all the glass-ceramics were higher than those of the glasses of the same chemical compositions. In scintillation spectra, all the samples showed emission peaks similarly seen in PL. The scintillation intensities of the glass ceramics were higher than those of the glasses of the same chemical compositions.
机译:我们研究了30baO-15tiO(2) - (55-x)Geo2-xsio(2)(Btgsx:x = 0,13.75,25,30,41.25和55)眼镜和玻璃和玻璃和玻璃和玻璃和玻璃的光致发光(PL)和闪烁性能。 通过常规熔体淬火方法制备的陶瓷。 在所有样品的PL光谱中,在490nm左右观察到发射带。 另外,在BTGS30,BTGS25,BTGS13.75和BTG55玻璃陶瓷中检测到其他发射带约为530nm。 从PL衰减时间常数,确认490和530nm处的发射带是由于T-3(1) - (1)(1)的Ti4 +离子和E-2-T-2的转变(2g )分别过渡Ti3 +离子。 所有玻璃陶瓷的量子产率高于相同化学组合物的玻璃的量子产率。 在闪烁光谱中,所有样品显示在PL中类似地看到的发射峰。 玻璃陶瓷的闪烁强度高于相同化学组合物的玻璃的强度。

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