Micro-Columnar CsBr:Eu Storage Phosphor for High-Efficiency High Energy Photon Radiography Panels

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

IEEE Transactions on Nuclear Science Pub Date : 2024-09-24 DOI:10.1109/TNS.2024.3462148

Jun Wang;Matthew S. J. Marshall;Stuart Miller;Federico Moretti;Edith Bourret-Courchesne;Bipin Singh;Vivek Nagarkar

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引用次数: 0

Abstract

Eu-doped CsBr films (CsBr:Eu) exhibit excellent sensitivity for X-rays and are superior storage phosphors for high energy (MeV) photon radiography applications when coupled with thick copper or tungsten substrates. We report on the growth of micro-columnar CsBr:Eu films on copper substrates for megavolt (MV) X-ray imaging applications. Our films exhibit dense uniformly distributed micro-columns with an average diameter of

$\sim 10~\mu $

m and a sharp, needle-like top. The advantage of this micro-columnar structured film is that the light can be channeled through the narrow columns to improve both light transmission and spatial resolution. We also determined the optimal Eu concentration in CsBr for the best storage phosphor performance. Growth of uniformly thick, micro-columnar structured films up to 2 mm was achieved on

$2^{\prime \prime } \times 2^{\prime \prime }$

metallic substrates, which were then characterized by optically-stimulated luminescence (OSL) coupled with X-ray excitation. Furthermore, 5 mm thick film growth demonstrates the potential to scale up to even thicker films.

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用于高效高能光子射线照相术面板的微柱状 CsBr:Eu 储存荧光粉

掺杂 Eu 的铯硼薄膜（CsBr:Eu）对 X 射线具有极佳的灵敏度，与厚铜或钨基板结合使用时，是高能量（MeV）光子射线成像应用的优质存储荧光粉。我们报告了在铜基底上生长微柱状 CsBr:Eu 薄膜以应用于兆伏特 (MV) X 射线成像的情况。我们的薄膜呈现出致密均匀分布的微柱，其平均直径为 $\sim 10~\mu $ m，顶部呈尖锐的针状。这种微柱状结构薄膜的优势在于，光线可以通过狭窄的柱状结构导入，从而提高透光率和空间分辨率。我们还确定了 CsBr 中 Eu 的最佳浓度，以获得最佳的存储荧光粉性能。在 $2^{\prime \prime } 上生长出了厚度均匀的微柱状结构薄膜，最厚可达 2 毫米。\金属基底上生长出厚度达 2 毫米的均匀微柱状结构薄膜，然后用光激发发光（OSL）和 X 射线激发对其进行表征。此外，5 毫米厚的薄膜生长证明了将其扩展到更厚薄膜的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.