氧同位素产生 14C 的核数据不确定性

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2024-11-18 DOI:10.1016/j.fusengdes.2024.114708

Priti Kanth, Ivan Kodeli, Mark R. Gilbert

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引用次数: 0

摘要

14C 是 O 同位素与高能中子反应产生的。由于 14C 的半衰期长、在环境中的停留时间长且容易被生物同化，因此在规划放射性物质的运输和处置时，14C 的产生是一个主要问题。在使用不同的数据库计算 O 同位素的 14C 生成量时，观察到的差异会造成不确定性，这些不确定性会影响对放射性废物产生量的预测，从而可能影响处置和回收建议。O 同位素核数据文件中给出的不确定性数据和共变矩阵也存在严重的不一致。

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Nuclear data uncertainty in 14C production from oxygen isotopes

¹⁴C is produced from the reactions of O isotopes with high-energy neutrons. Due to its long half-life, high residence time in the environment and ease of assimilation into living matter, the production of ¹⁴C is a major concern when planning for the transportation and disposal of radioactive materials. Observed variation in calculated ¹⁴C production from O isotopes using different data libraries causes uncertainties that are demonstrated to affect predictions of radioactive waste arisings and thus could impact disposal and recycling recommendations. There are also significant inconsistencies in the uncertainty data and co-variance matrices given in the nuclear data files for O isotopes.

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.