Development of Tm-doped CaHfO3 single-crystal-scintillators for application to integrated-type detectors

Japanese Journal of Applied Physics Pub Date : 2024-05-21 DOI:10.35848/1347-4065/ad4e81

Yusuke Endo, Kensei Ichiba, D. Nakauchi, Takumi Kato, N. Kawaguchi, Takayuki Yanagida

引用次数: 0

Abstract

Photoluminescence and scintillation properties of Tm:CaHfO3 single crystals were investigated. From the results of photoluminescence properties, all the Tm:CaHfO3 samples showed emission bands due to the 4f–4f transitions of Tm3+, and the 1.0% Tm:CaHfO3 sample showed the highest quantum yield among all the samples upon excitation at 360 nm. The afterglow levels at 20 ms after X-ray irradiation for 2 ms were approximately 12,000 ppm. Pulse height spectra using 137Cs as γ-ray source revealed the 1.0% Tm:CaHfO3 sample showed the highest light yield of 1,250 photons/MeV among all the samples.

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开发用于集成型探测器的掺锝 CaHfO3 单晶闪烁体

研究了 Tm:CaHfO3 单晶的光致发光和闪烁特性。从光致发光特性的结果来看，所有 Tm:CaHfO3 样品都显示出 Tm3+ 的 4f-4f 转变引起的发射带，其中 1.0% Tm:CaHfO3 样品在 360 纳米激发下的量子产率最高。X 射线照射 2 毫秒后，20 毫秒处的余辉水平约为 12,000 ppm。使用 137Cs 作为 γ 射线源的脉冲高度光谱显示，在所有样品中，1.0% Tm:CaHfO3 样品的光产率最高，达到 1,250 光子/兆电子伏。

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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Japanese Journal of Applied Physics

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