CsI:Ho单晶的x射线诱导闪烁特性

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2025-02-13 DOI:10.1016/j.radmeas.2025.107402

Shunta Takase, Keiichiro Miyazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida

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引用次数: 0

摘要

制备了 CsI:Ho 单晶，并对其闪烁特性进行了研究。在 X 射线的照射下，在 310 纳米和 430 纳米处观察到两个由 CsI 自俘获激子产生的宽带。此外，由于 Ho3+ 的 4f-4f 转变，CsI:Ho 在 550、640、990、1200、1320 和 1490 纳米波长处出现了几个发射峰。获得的闪烁衰减时间常数为 1.65-1.74 毫秒。从剂量率响应函数来看，0.05% CsI:Ho 的线性范围为 10 至 1000 mGy/h，低检测限为 7 mGy/h。

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X-ray-induced scintillation properties of CsI:Ho single crystals

CsI:Ho single crystals were fabricated, and their scintillation properties were investigated. Under irradiation with X-rays, two broad bands due to self-trapped excitons of CsI were observed at 310 and 430 nm. Moreover, CsI:Ho showed several emission peaks at 550, 640, 990, 1200, 1320, and 1490 nm due to 4f-4f transitions of Ho³⁺. The obtained scintillation decay time constants were 1.65–1.74 ms. From dose rate response functions, the 0.05% CsI:Ho showed linearity between 10 and 1000 mGy/h, and the low detection limit was 7 mGy/h.

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来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.