评价提高激发功率对氧化铍实时光激发发光光纤耦合剂量计的影响

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

Radiation Measurements Pub Date : 2025-04-15 DOI:10.1016/j.radmeas.2025.107439

Erin Lukas , Alexandre M.C. Santos , Miftar Ganija , Peter Veitch

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引用次数: 0

摘要

我们报告了一种光纤耦合、实时光激发发光（rtOSL）氧化铍（BeO）剂量计的开发和测试，该剂量计具有3w光纤耦合激光二极管，从上一代的40mw激光器升级而来。高激光功率耦合到1mm长，1mm直径的BeO陶瓷颗粒，导致rtOSL信号具有显着更高的信噪比。由于探测器漂白功率的增加，rtOSL信号的非线性随辐照时间的增加而增加。这种信号非线性使用损耗和反褶积校正技术进行校正，产生的信号与线性拟合的平均绝对差（MAD）分别为4.0%和2.1%。校正后的rtOSL信号与剂量率呈线性关系，且无茎效应。

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Evaluating the effects of increased stimulation power on a beryllium oxide real-time optically stimulated luminescence fibre-coupled dosimeter

We report the development and testing of a fibre-coupled, real-time optically stimulated luminescence (rtOSL) beryllium oxide (BeO) dosimeter with a 3 W fibre-coupled laser diode, upgraded from the previous iteration's 40 mW laser. The high laser power coupled to the 1 mm long, 1 mm diameter BeO ceramic pellet resulted in rtOSL signals with significantly larger signal-to-noise ratios. The rtOSL signals exhibited increased nonlinearity with irradiation time due to the increased bleaching power of the detector. This signal nonlinearity was corrected using depletion and deconvolution correction techniques, producing signals with a mean absolute difference (MAD) from their linear fits of 4.0 % and 2.1 % respectively. The corrected rtOSL signals were observed to be linear with dose rate and stem effect-free.

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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.