YBa3B9O18: A Promising Scintillation Crystal

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• 作者：Ming He ; Xiaolong Chen ; Yuping Sun ; Jun Liu ; Jingtai Zhao ; Chengjun Duan
• 刊名：Crystal Growth & Design
• 出版年：2007
• 出版时间：February 2007
• 年：2007
• 卷：7
• 期：2
• 页码：199 - 201
• 全文大小：165K
• 年卷期：v.7,no.2(February 2007)
• ISSN：1528-7505

文摘

Single crystals of the newly discovered borate YBa₃B₉O₁₈ with dimensions up to 13 × 8 × 4 mm³ were successfully grownby the Czochralski pulling method. X-ray excited luminescence measurements of the YBa₃B₉O₁₈ showed a broad emission band in thewavelength 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 PbWO₄measured at nearly the same conditions. The results show that borate can also exhibit attracting scintillation properties. A narrow temperaturerange for growth and drastic anisotropy of the growth rates are the main difficulties in growing large crystals. The crystal growth andproperties of denser isostructural REBa₃B₉O₁₈ series (RE = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb) deserve further investigation.