Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Blvd, Ann Arbor, MI 48109, USA.
Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois, 104 S. Wright St., Urbana, IL 61801, USA.
Radiat Prot Dosimetry. 2020 Dec 3;191(3):319-327. doi: 10.1093/rpd/ncaa151.
Traditionally available handheld dosemeters are generally sensitive to only one type of radiation: neutrons or photons. Some dosemeters also rely on very specific attenuation correlations between response and dose, are not scalable in size and multiple dosemeters are required to characterise mixed-particle fields. The research presented here serves as a proof-of-concept for a method to simultaneously measure dose rates from neutrons and photons using a particle discriminating organic scintillation detector without the need for spectral deconvolution. The method was compared with traditional instruments and to simulation. Isotopic photon dose rates measured with this method were within 4% of simulated truth, whereas fission spectrum neutron dose rates were measured within 21%. Measurements of dose rates from both particles agree with simulated truth better than traditional instruments. This new method allows for measurement of dose equivalent from both neutrons and photons with a single instrument and no reliance on spectral deconvolution.
中子或光子。一些剂量计还依赖于响应与剂量之间非常特定的衰减相关性，尺寸不可缩放，并且需要多个剂量计来描述混合粒子场。这里介绍的研究是一种使用粒子甄别有机闪烁探测器同时测量中子和光子剂量率的方法的概念验证，而无需进行光谱解卷积。该方法与传统仪器和模拟进行了比较。使用该方法测量的同位素光子剂量率与模拟真实值相差在 4%以内，而裂变谱中子剂量率则在 21%以内。两种粒子的剂量率测量结果与模拟真实值的吻合程度均优于传统仪器。这种新方法允许使用单个仪器测量中子和光子的剂量当量，并且不依赖于光谱解卷积。
