Theoretical and experimental estimation of the relative optically stimulated luminescence efficiency of an optical-fiber-based BaFBr:Eu detector for swift ions
Theoretical and experimental estimation of the relative optically stimulated luminescence efficiency of an optical-fiber-based BaFBr:Eu detector for swift ions
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基于光纤的 BaFBr:Eu 快离子探测器的相对光受激发光效率的理论和实验估计
DOI：
10.1080/00223131.2021.2017372
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发表时间：
2022
影响因子：
1.2
通讯作者：
Uritani Akira
中科院分区：
文献类型：
--
作者：
Hirata Yuho;Sato Tatsuhiko;Watanabe Kenichi;Ogawa Tatsuhiko;Parisi Alessio;Uritani Akira
辐射探测器剂量评估的可靠性是放疗、辐射防护和高能物理等各个领域的重要特征。然而，许多高线性能量传递（LET）辐射辐照的探测器表现出被称为猝灭效应的效率下降。这种猝灭效应不仅取决于粒子LET，还与离子种类及其微观能量沉积模式密切相关。最近，在粒子和重离子输运码系统（PHITS）模拟的微剂量比能分布的基础上，提出了一种估算发光探测器相对效率的计算方法。本研究应用该模型估算了BaFBr:Eu探测器的相对光激发发光效率。此外，我们测量了暴露于4he，12C和20ne离子下的BaFBr:Eu探测器的发光强度来验证计算数据。在微剂量靶直径约为30 ~ 50 nm的情况下，该模型可以再现实验数据。计算出的相对效率除LET外，还表现出离子种类的依赖性。结果表明，利用比能量计算微剂量是一种准确理解不同粒子辐照下BaFBr:Eu探测器OSL测量结果的成功方法。
The reliability of dose assessment with radiation detectors is an important feature in various fields, such as radiotherapy, radiation protection, and high-energy physics. However, many detectors irradiated by high linear energy transfer (LET) radiations exhibit decreased efficiency called the quenching effect. This quenching effect depends not only on the particle LET but also strongly on the ion species and its microscopic pattern of energy deposition. Recently, a computational method for estimating the relative efficiency of luminescence detectors has been proposed following the analysis of microdosimetric specific energy distributions simulated using the particle and heavy ion transport code system (PHITS).This study applied the model to estimate the relative optically stimulated luminescence (OSL) efficiency of BaFBr:Eu detectors. Additionally, we measured the luminescence intensity of BaFBr:Eu detectors exposed to4He,12C, and20Ne ions to verify the calculated data.The model reproduced the experimental data in the cases of adopting a microdosimetric target diameter of approximately 30–50 nm. The calculated relative efficiency exhibits ion-species dependence in addition to LET. This result shows that the microdosimetric calculation from specific energy is a successful method for accurately understanding the results of OSL measurements with BaFBr:Eu detectors irradiated by various particles.
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影响因子：
2
作者：
Bilski, P.;Puchalska, M.
通讯作者：
Puchalska, M.
DOI：
10.1016/s0168-583x(01)00712-1
发表时间：
2001-09-01
影响因子：
1.3
作者：
Horowitz, YS
通讯作者：
Horowitz, YS
影响因子：
3.7
作者：
Ogawa T;Yamaki T;Sato T
通讯作者：
Sato T
DOI：
10.1002/9780470977064
发表时间：
2011-02
期刊：
--
影响因子：
--
作者：
E. Yukihara;S. McKeever
通讯作者：
E. Yukihara;S. McKeever
影响因子：
1
作者：
Olko, P.;Bilski, P.;Waligorski, M. P. R.
通讯作者：
Waligorski, M. P. R.