用铅慢化241Am-Be中子源评价252Cf源参数的系统表征

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

Applied Radiation and Isotopes Pub Date : 2025-06-19 DOI:10.1016/j.apradiso.2025.111987

Angela Souza Gonçalves, Lunia Coelho de Almeida de Lima, Antonio Carlos Ferreira, Marcelo Marques Martins, Walsan Wagner Pereira

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引用次数: 0

摘要

在2021年ISO 8529-1修订后，仅留下252Cf和241Am-Be作为标准参考字段。目前，1克252Cf的成本约为2700万美元，与241Am-Be相比，它的广泛使用成本过高，241Am-Be很容易获得，成本效益高，半衰期长。本文描述了一种利用铅缸内慢化的a241Am-Be中子源来模拟a252Cf场特性的系统的开发。这种新装置将用于实验室要求的样品测试、校准和辐照。

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Characterization of a system with a 241Am-Be neutron source moderated by lead for evaluating parameters of a 252Cf source

After the 2021 revision of ISO 8529–1, discontinuation left only ²⁵²Cf and ²⁴¹Am-Be as standard reference fields. Currently, the cost of 1 g of ²⁵²Cf is approximately 27 million dollars, rendering it prohibitively expensive for widespread use compared to ²⁴¹Am-Be, which is readily available, cost-effective, and has a long half-life. This work describes the development of a system utilizing a²⁴¹Am-Be neutron source moderated within a lead cylinder to simulate the characteristics of a²⁵²Cf field. This new setup will be instrumental for sample testing, calibrations, and irradiations required by the laboratory's demands.

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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.