用4π Si(Li) β光谱仪测量147Pm的β衰变谱

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-09-18 DOI:10.1016/j.apradiso.2025.112193

Gaël Craveiro, Sylvain Leblond, Xavier Mougeot

{"title":"用4π Si(Li) β光谱仪测量147Pm的β衰变谱","authors":"Gaël Craveiro, Sylvain Leblond, Xavier Mougeot","doi":"10.1016/j.apradiso.2025.112193","DOIUrl":null,"url":null,"abstract":"<div><div>This work presents major upgrades of a custom beta spectrometer, based on a quasi-4π configuration of two large-volume Si(Li) detectors, supporting beta spectra measurements up to 3 MeV. The electronics was modernized and a FASTER digital acquisition system was implemented for independent channel processing. Characterization using a <sup>207</sup>Bi source confirmed good linearity and agreement with Geant4 simulations, though energy resolution remains limited by electronic noise. The first forbidden non-unique spectrum of <sup>147</sup>Pm decay was measured and, after a neat coincidence analysis, was corrected for the remaining distortion using Tikhonov unfolding. Discrepancies below 80 keV were identified to unoptimized source preparation, later confirmed by autoradiography. These upgrades enhance the apparatus precision, with future efforts aimed at better resolution, lower thresholds and optimized source preparation. Eventually, a new Q-value of 225.84 (49) keV was determined from the analysis of the Kurie plot.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"226 ","pages":"Article 112193"},"PeriodicalIF":1.8000,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measurement of the 147Pm beta decay spectrum with a 4π Si(Li) beta spectrometer\",\"authors\":\"Gaël Craveiro, Sylvain Leblond, Xavier Mougeot\",\"doi\":\"10.1016/j.apradiso.2025.112193\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This work presents major upgrades of a custom beta spectrometer, based on a quasi-4π configuration of two large-volume Si(Li) detectors, supporting beta spectra measurements up to 3 MeV. The electronics was modernized and a FASTER digital acquisition system was implemented for independent channel processing. Characterization using a <sup>207</sup>Bi source confirmed good linearity and agreement with Geant4 simulations, though energy resolution remains limited by electronic noise. The first forbidden non-unique spectrum of <sup>147</sup>Pm decay was measured and, after a neat coincidence analysis, was corrected for the remaining distortion using Tikhonov unfolding. Discrepancies below 80 keV were identified to unoptimized source preparation, later confirmed by autoradiography. These upgrades enhance the apparatus precision, with future efforts aimed at better resolution, lower thresholds and optimized source preparation. Eventually, a new Q-value of 225.84 (49) keV was determined from the analysis of the Kurie plot.</div></div>\",\"PeriodicalId\":8096,\"journal\":{\"name\":\"Applied Radiation and Isotopes\",\"volume\":\"226 \",\"pages\":\"Article 112193\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2025-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Radiation and Isotopes\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S096980432500538X\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Radiation and Isotopes","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S096980432500538X","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}

引用次数: 0

摘要

这项工作提出了基于两个大体积Si（Li）探测器的准4π配置的定制β光谱仪的重大升级，支持高达3 MeV的β光谱测量。电子设备现代化，并实施了一个更快的数字采集系统，用于独立通道处理。使用207Bi源的表征证实了良好的线性和与Geant4模拟的一致性，尽管能量分辨率仍然受到电子噪声的限制。测量了147Pm衰变的第一个被禁止的非唯一光谱，经过一个简洁的巧合分析，使用吉洪诺夫展开修正了剩余的失真。低于80 keV的差异被确定为未优化的源制备，随后通过放射自显影证实。这些升级提高了仪器的精度，未来的努力旨在提高分辨率，降低阈值和优化源准备。最后，通过对Kurie图的分析，确定了新的q值225.84 (49)keV。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Measurement of the 147Pm beta decay spectrum with a 4π Si(Li) beta spectrometer

This work presents major upgrades of a custom beta spectrometer, based on a quasi-4π configuration of two large-volume Si(Li) detectors, supporting beta spectra measurements up to 3 MeV. The electronics was modernized and a FASTER digital acquisition system was implemented for independent channel processing. Characterization using a ²⁰⁷Bi source confirmed good linearity and agreement with Geant4 simulations, though energy resolution remains limited by electronic noise. The first forbidden non-unique spectrum of ¹⁴⁷Pm decay was measured and, after a neat coincidence analysis, was corrected for the remaining distortion using Tikhonov unfolding. Discrepancies below 80 keV were identified to unoptimized source preparation, later confirmed by autoradiography. These upgrades enhance the apparatus precision, with future efforts aimed at better resolution, lower thresholds and optimized source preparation. Eventually, a new Q-value of 225.84 (49) keV was determined from the analysis of the Kurie plot.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

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.