Use of CR-39 Dosimeters for the Imaging of Neutron Beam Profiles in the 100 keV-10 MeV Energy Range.

IF 3.5 3区综合性期刊 Q2 CHEMISTRY, ANALYTICAL

Sensors Pub Date : 2025-09-19 DOI:10.3390/s25185865

Margherita Simoni, Leonardo Baldassarre, Carlo Cazzaniga, Laura Fazi, Mattia Gaboardi, Leandro Gemmiti, Maria Kastriotou, Matthew Krzystyniak, Anna Marsicano, Marco Martellucci, Triestino Minniti, Anna Prioriello, Roberto Senesi, Valentin Suteica, Giovanni Romanelli

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Abstract

We provide a beam shape characterization of the VESUVIO spectrometer, at the ISIS Neutron and Muon Source, employing CR-39 solid-state nuclear track detectors and combining techniques including optical and electron microscopy, as well as Monte Carlo transport simulations. In particular, we show, through comparison with irradiation with 14 MeV neutrons at the NILE Facility at ISIS, that the majority of defects on the etched surface of the dosimeters irradiated on VESUVIO were induced by neutrons with energies between 100 keV and 10 MeV. Our results were compared to previous characterizations of the VESUVIO beam shape performed in either the thermal or fast energy ranges, and we conclude that the VESUVIO beam has a constant shape from thermal-neutron energies up to 10 MeV, composed of an umbra (intensity above 90% of the maximum) with radius 1.1 cm, and surrounded by a penumbra (intensity above 1% of the maximum) that extends up to 2.5 cm.

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使用CR-39剂量计在100kv - 10mev能量范围内成像中子束剖面。

我们利用CR-39固体核径迹探测器，结合光学和电子显微镜以及蒙特卡罗输运模拟等技术，在ISIS中子和介子源上对VESUVIO光谱仪进行了光束形状表征。特别是，通过与ISIS的NILE设施中14 MeV中子的辐照比较，我们发现VESUVIO上辐照的剂量计蚀刻表面上的大多数缺陷是由能量在100 keV到10 MeV之间的中子引起的。我们的结果与先前在热能量或快能量范围内进行的VESUVIO光束形状的表征进行了比较，我们得出结论，VESUVIO光束具有恒定的形状，从热中子能量到10 MeV，由半径为1.1 cm的本影（强度高于最大值的90%）组成，周围是一个半本影（强度高于最大值的1%），延伸至2.5 cm。

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

Sensors 工程技术-电化学

CiteScore

7.30

自引率

12.80%

发文量

8430

审稿时长

1.7 months

期刊介绍： Sensors (ISSN 1424-8220) provides an advanced forum for the science and technology of sensors and biosensors. It publishes reviews (including comprehensive reviews on the complete sensors products), regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.