用于产生强中子场设施的润滑脂的辐射效应

Proceedings of the 14th International Workshop on Spallation Materials Technology Pub Date : 2020-02-05 DOI:10.7566/jpscp.28.061005

M. Ferrari, A. Zenoni, Yongjoong Lee, A. Andrighetto

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引用次数: 0

摘要

聚合物组件用于存在强中子和伽马场的加速器和靶环境。选择了九种市售润滑脂，研究了它们在散裂中子源和产生放射性离子束的设施中使用的辐射诱导功能降解。油脂样品在核研究堆的混合中子和γ场中辐照，总吸收剂量达几毫戈瑞。开发了油脂样品辐照和辐照后检验的方法。比较了不同样品的辐射耐受程度。一些油脂在辐射诱导下表现出剧烈的物理性质变化，而另一些油脂在传递的吸收剂量达到最高值时仍保持稳定。

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Radiation Effects in Greases for Use in Facilities Producing Intense Neutron Fields

Polymeric components are used in accelerator and target environments where intense neutron and gamma ﬁelds are present. Nine commercially available greases were selected to study their radiation-induced functional degradation for use in spallation neutron sources and in facilities producing radioactive ion beams. Grease samples were irradiated in the mixed neutron and gamma ﬁeld of a nuclear research reactor up to several MGy of total absorbed dose. Methodologies for the irradiation and post-irradiation examination of grease samples are developed. The diﬀerent degree of radiation tolerance of the tested samples was compared. Some of the greases showed dramatic radiation-induced changes of their physical properties, while others remain stable up to the highest values of delivered absorbed dose.

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Proceedings of the 14th International Workshop on Spallation Materials Technology

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