Application of a PGNAA-based neutron spectrometer for simulated workplace neutron field measurement

IF 1.8 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2025-12-01 Epub Date: 2025-10-22 DOI:10.1016/j.radmeas.2025.107544

Can Cheng , Liteng Xing , Jiayu Gu , Jiatong Li , Zeliang Wang , Zhenhua Zhang , Daqian Hei , Wenbao Jia , Ruoyu Chen , Xunrong Xia , Chuanhui Yuan

{"title":"Application of a PGNAA-based neutron spectrometer for simulated workplace neutron field measurement","authors":"Can Cheng , Liteng Xing , Jiayu Gu , Jiatong Li , Zeliang Wang , Zhenhua Zhang , Daqian Hei , Wenbao Jia , Ruoyu Chen , Xunrong Xia , Chuanhui Yuan","doi":"10.1016/j.radmeas.2025.107544","DOIUrl":null,"url":null,"abstract":"<div><div>The calibration of neutron dosimeter needs to be conducted in a neutron field that closely resembles its workplace field. Neutron generators can be used to simulate the workplace neutron field, making the measurement of the neutron spectrum in the modulated field a crucial task. In this study, a neutron spectrometer based on prompt gamma ray neutron activation analysis (PGNAA) was employed to measure the neutron spectrum. The response of the neutron spectrometer was calculated using Monte Carlo simulation, and benchmark measurements were carried out in D-D and D-T neutron fields. The results show that the energy responses at 2.5 MeV and 14 MeV are in good agreement with the simulated values. The neutron spectrum of a graphite-moderated D-D neutron source was unfolded using the neutron spectrometer and the corresponding neutron ambient dose equivalent rate was compared with the value recorded by neutron dosimeter. The deviation between the two is 14 %, validating the feasibility of the neutron spectrometer and its potential application for neutron dosimeter calibration.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"189 ","pages":"Article 107544"},"PeriodicalIF":1.8000,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Measurements","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350448725001738","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/10/22 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The calibration of neutron dosimeter needs to be conducted in a neutron field that closely resembles its workplace field. Neutron generators can be used to simulate the workplace neutron field, making the measurement of the neutron spectrum in the modulated field a crucial task. In this study, a neutron spectrometer based on prompt gamma ray neutron activation analysis (PGNAA) was employed to measure the neutron spectrum. The response of the neutron spectrometer was calculated using Monte Carlo simulation, and benchmark measurements were carried out in D-D and D-T neutron fields. The results show that the energy responses at 2.5 MeV and 14 MeV are in good agreement with the simulated values. The neutron spectrum of a graphite-moderated D-D neutron source was unfolded using the neutron spectrometer and the corresponding neutron ambient dose equivalent rate was compared with the value recorded by neutron dosimeter. The deviation between the two is 14 %, validating the feasibility of the neutron spectrometer and its potential application for neutron dosimeter calibration.

查看原文本刊更多论文

基于pgnaa的中介仪在模拟工作场所中子场测量中的应用

中子剂量计的校准需要在与其工作场所非常相似的中子场中进行。中子发生器可以用来模拟工作场所的中子场，使调制场中中子谱的测量成为一项至关重要的任务。在本研究中，采用基于提示伽马射线中子活化分析（PGNAA）的中子星谱仪测量中子能谱。利用蒙特卡罗模拟计算了中子星的响应，并在D-D和D-T中子场进行了基准测量。结果表明，在2.5 MeV和14 MeV下的能量响应与模拟值吻合较好。用中光谱仪展开了石墨慢化D-D中子源的中子谱，并将相应的中子环境剂量当量率与中子剂量计记录的值进行了比较。两者之间的偏差为14%，验证了中子谱仪的可行性及其在中子剂量计校准中的潜在应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.