Yttrium-doped barium fluoride crystal and preparation method and use thereof

US11142689B2 · kind B2 · utility

Assignees

• SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCES · CN
• R&D CENTER, SHANGHAI INSTITUTE OF CERAMICS · CN

Inventors

• Junfeng Chen · 红钢城街道, CN
• Yong Du · Shanghai, CN
• Shaohua Wang · Zhenjiang, CN
• Shiyun Sun · Shanghai, CN
• Xuenong Zhou · Shanghai, CN
• Xiang Li · Beijing, CN

Key dates

• Filing date: Apr 13, 2018
• Grant date: Oct 12, 2021
• Expiry date: Apr 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B28/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Disclosed are a yttrium-doped barium fluoride crystal and a preparation method and the use thereof, wherein the yttrium-doped barium fluoride crystal has a chemical composition of Ba(1−x)YxF2+x, in which 0.01≤x≤0.50. The yttrium-doped BaF2 crystal of the present invention has improved scintillation performance. The yttrium doping may greatly suppress the slow luminescence component of the BaF2 crystal and has an excellent fast/slow scintillation component ratio. The doped crystal is coupled to an optical detector to obtain a scintillation probe which is applicable to the fields of high time resolved measurement radiation such as high-energy physics, nuclear physics, ultrafast imaging and nuclear medicine imaging.