Thus the study of PbWO_4 crystal with high light yield is paid considerable attention to develop its applications in medium and low energy such as PET detector.

因此，提高钨酸铅晶体的光产额以使其在PET装置等低能领域获得应用已成为近年来钨酸铅晶体的研究热点。

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The motives of the experiment are two: one is to improve the quality of the crystal, to decrease the macroscopic defects and the other, to improve the light yield of the crystal.

实验主要围绕提高晶体的质量、减小晶体宏观缺陷和提高晶体光输出性能两个方面进行。

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Cerium-doped orthoaluminate(YAP:Ce) is a kind of scintillator with high light yield and fast decay time, which makes it a good choice for applications in high-energy physics and medical imaging.

YAP晶体具有优良的闪烁性能，其主要特点是衰减时间短，光产额大，在高能射线探测、核医学等方面有着广阔的应用前景。

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In that light, a negative yield of 0.55% on index-linked bonds seems a good investment.

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It could yield a light passing shower during the day, but it's a very low chance for this, so I'm expecting it to remain dry.

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Today, my colleague Jimmy Leppert highlights how urgency, creativity and the light touch of leadership can yield incredible results.

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