Development of a gamma-gamma angular correlation digital instrumentation at LNE-LNHB

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

Applied Radiation and Isotopes Pub Date : 2025-09-10 DOI:10.1016/j.apradiso.2025.112172

Sylvain Leblond, Christophe Bobin

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Abstract

The LNE-LNHB has recently developed a coincidence instrumentation to take advantage of the latest developments in fast digital acquisition. The performances of the new setup have been tested using two LaBr₃ scintillation detectors to investigate gamma-gamma angular correlation in ⁶⁰Co decay. For that purpose, a specific goniometer based on a simple design was developed. The data collection using a list-mode data acquisition with a CAEN DT5730 digitizer was carried out over a period of three months using an 800-kBq ⁶⁰Co source. The counting analysis was performed taking advantage of the fast decay properties, and good energy resolution, of the two LaBr₃ detectors allowing a very strict selection of the coincident gamma events. From this study, the parameters of ⁶⁰Ni angular correlation were determined to be equal to a₂ = 0.1030(31) and a₄ = 0.0097(36), respectively. These results are consistent with previously published values. The accuracy obtained is compared to various recent studies and to a reference cryogenic measurement. Prospects for improvement of the experimental setup are discussed.

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LNE-LNHB伽玛角相关数字仪器的研制

LNE-LNHB最近开发了一种巧合仪器，以利用快速数字采集的最新发展。利用两个LaBr3闪烁探测器对新装置的性能进行了测试，以研究60Co衰变中的伽马-伽马角相关性。为此，一种基于简单设计的特殊测角仪被开发出来。数据收集使用CAEN DT5730数字化仪的列表模式数据采集，使用800-kBq 60Co源，为期三个月。计数分析是利用两个LaBr3探测器的快速衰减特性和良好的能量分辨率进行的，允许非常严格地选择一致的伽马事件。本研究确定60Ni角相关参数分别为a2 = 0.1030（31）和a4 = 0.0097（36）。这些结果与先前发表的值一致。所获得的精度与最近的各种研究和参考低温测量进行了比较。讨论了实验装置改进的前景。

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.