Measurement of neutron spectra in spent fuel storage

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2024-10-18 DOI:10.1016/j.apradiso.2024.111552

Miloš Tichý , Ondřej Huml , Tomáš Bílý , Evžen Losa , Evžen Novák , Bohumil Jánský , Jiří Rejchrt

引用次数: 0

Abstract

The neutron spectrum was measured at two locations in the spent fuel storage facility of the Temelín nuclear power plant. The measurement had two primary objectives: to map the neutron -γ field by quantifying the ambient dose equivalent H∗(10) and to identify methods that could improve the quality of the adjusted neutron spectrum using a Bonner Sphere Spectrometer (BSS). Three spectrometers were used: a BSS and two proton recoil spectrometers. Hydrogen-filled proportional counters and an EJ309 scintillator were used to construct the a priori spectrum for BSS adjustment. The details of this process and its results are discussed. The a posteriori spectrum was used to calculate the ambient dose equivalent H∗(10). The resulting spectrum is highly thermalised, but the predominant contribution to H∗(10) was in the 100 keV-1.3 MeV range. The use of hydrogen-proportional counters in combination with the BSS is recommended.

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乏燃料贮存中的中子光谱测量。

在特梅林核电站乏燃料储存设施的两个地点测量了中子频谱。测量有两个主要目标：通过量化环境剂量当量 H∗(10)来绘制中子 -γ 场图，以及确定可使用邦纳球形光谱仪（BSS）提高调整后中子谱质量的方法。使用了三台光谱仪：一台 BSS 和两台质子反冲光谱仪。充氢比例计数器和 EJ309 闪烁器用于构建用于 BSS 调整的先验光谱。本文讨论了这一过程的细节及其结果。后验光谱用于计算环境剂量当量 H∗(10)。得出的光谱热化程度很高，但 H∗(10)的主要贡献在 100 keV-1.3 MeV 范围内。建议将氢比例计数器与 BSS 结合使用。

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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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.