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YBa3B9O18: A promising scintillation crystal

机译:YBa3B9O18:很有前途的闪烁晶体

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摘要

Single crystals of the newly discovered borate YBa3B9O18 with dimensions up to 13 x 8 x 4 mm(3) were successfully grown by the Czochralski pulling method. X-ray excited luminescence measurements of the YBa3B9O18 showed a broad emission band in the wavelength range from 350 to 500 nm with a peak center at 400 nm. The light yield is about 6-7 times larger than that of PbWO4 measured at nearly the same conditions. The results show that borate can also exhibit attracting scintillation properties. A narrow temperature range for growth and drastic anisotropy of the growth rates are the main difficulties in growing large crystals. The crystal growth and properties of denser isostructural REBa3B9O18 series (RE = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb) deserve further investigation.
机译:新发现的硼酸盐YBa3B9O18的单晶通过Czochralski拉方法成功生长,尺寸高达13 x 8 x 4 mm(3)。 YBa3B9O18的X射线激发发光测量显示在350至500 nm的波长范围内有较宽的发射带,其峰值中心在400 nm处。在几乎相同的条件下测得的光产率约为PbWO4的6-7倍。结果表明,硼酸盐也可以表现出吸引人的闪烁特性。生长大晶体的主要困难是狭窄的生长温度范围和急剧的各向异性。致密的同构REBa3B9O18系列(RE = Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb)的晶体生长和性能值得进一步研究。

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