Crystal Growth, Optical, and Scintillation Properties of Eu²+-Doped TlSr₂Br₅

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Nuclear Science Pub Date : 2025-06-30 DOI:10.1109/TNS.2025.3584220

Edgar van Loef;Myles Inniss;Jared Schott;Kimberly Pestovich;Luis Stand;Mariya Zhuravleva;Charles Melcher;Lakshmi Soundara Pandian;Jarek Glodo

引用次数: 0

Abstract

Crystals of undoped and Eu2+-doped TlSr2Br5 of up to 16 mm in diameter and 50 mm in length were grown by the vertical Bridgman technique. TlSr2Br5 has the monoclinic crystal structure with space group P21/c. Its density and

$Z_{\text {eff}}$

are 5.03 g/cm3 and 58.6, respectively. Radioluminescence spectra of undoped and Eu2+-doped TlSr2Br5 feature a broad emission band peaking at about 440 nm for undoped and 520 nm for Eu2+-doped crystals. The light yield of undoped TlSr2Br5 is 42000 ph/MeV, which increases to 55000 ph/MeV for Eu2+-doped crystals. The energy resolution at 662 keV (137Cs) is about 5%–6% full-width at half-maximum (FWHM). The scintillation decay of undoped and Eu2+-doped TlSr2Br5 is on the order of hundreds of nanoseconds.

查看原文本刊更多论文

Eu²+掺杂TlSr₂Br₅的晶体生长、光学和闪烁特性

采用垂直Bridgman技术生长出了直径达16mm、长度达50mm的未掺杂和掺Eu2+ TlSr2Br5晶体。TlSr2Br5具有单斜晶结构，空间群为P21/c。其密度为5.03 g/cm3, $Z_{\text {eff}}$为58.6 g/cm3。未掺杂和Eu2+掺杂的TlSr2Br5的辐射发光光谱具有较宽的发射带，未掺杂的晶体在440 nm左右，Eu2+掺杂的晶体在520 nm左右。未掺杂TlSr2Br5晶体的光产率为42000 ph/MeV，掺杂Eu2+晶体的光产率为55000 ph/MeV。662 keV （137Cs）下的能量分辨率约为全宽半最大值（FWHM）的5%-6%。未掺杂和掺入Eu2+的TlSr2Br5的闪烁衰减在数百纳秒量级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Transactions on Nuclear Science 工程技术-工程：电子与电气

CiteScore

3.70

自引率

27.80%

发文量

314

审稿时长

6.2 months

期刊介绍： The IEEE Transactions on Nuclear Science is a publication of the IEEE Nuclear and Plasma Sciences Society. It is viewed as the primary source of technical information in many of the areas it covers. As judged by JCR impact factor, TNS consistently ranks in the top five journals in the category of Nuclear Science & Technology. It has one of the higher immediacy indices, indicating that the information it publishes is viewed as timely, and has a relatively long citation half-life, indicating that the published information also is viewed as valuable for a number of years. The IEEE Transactions on Nuclear Science is published bimonthly. Its scope includes all aspects of the theory and application of nuclear science and engineering. It focuses on instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.