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首页> 外文期刊>Journal of the Korean Physical Society >Thermal properties of a fiber-optic radiation sensor for measuring gamma-rays in high-temperature conditions
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Thermal properties of a fiber-optic radiation sensor for measuring gamma-rays in high-temperature conditions

机译:高温条件下用于测量伽马射线的光纤辐射传感器的热性能

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A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-rays accurately in elevated temperature conditions. Throughout this study, a LYSO:Ce crystal was employed as a sensing material of the FORS due to its high light yield (32,000 photons/MeV), fast decay time (a parts per thousand currency sign 47 ns) and high detection efficiency. Although the LYSO:Ce crystal has many desirable qualities, the thermoluminescence (TL) should be eliminated by using a heat annealing process because the light yield of the LYSO:Ce crystal varies with its TL. In this study, therefore, we obtained the TL curve of the LYSO:Ce crystal by increasing the temperature up to 280 a"integral, and we demonstrated that almost all of the TL of the LYSO:Ce crystal was eliminated by the heat annealing process.
机译:光纤辐射传感器(FORS)使用掺铈的硅酸盐-钇lut(LYSO:Ce)闪烁体晶体和二氧化硅光纤(SOF)制成,可以在高温条件下准确地测量伽马射线。在整个研究过程中,由于LYSO:Ce晶体的高光产率(32,000光子/ MeV),快速衰减时间(千分之一货币符号47 ns)和高检测效率,因此被用作FORS的传感材料。尽管LYSO:Ce晶体具有许多理想的质量,但由于LYSO:Ce晶体的发光量随其TL的不同而应通过热退火工艺消除热致发光(TL)。因此,在这项研究中,我们通过将温度提高至280 a“积分来获得LYSO:Ce晶体的TL曲线,并且我们证明了LYSO:Ce晶体的几乎所有TL都通过热退火工艺消除了。

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