Atomistic modelling and experimental verification of vitrified matrices for waste encapsulation

废物封装用玻璃化基质的原子建模和实验验证

• 批准号: EP/K007882/1
• 负责人: Roger Smith
• 金额: $ 63.86万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FK007882%2F1
• 关键词: Atomistic; modelling; experimental; verification; vitrified

The encapsulation of spent nuclear waste and its storage over many years is a crucial aspect of nuclear energy technology. It is vital that this process is reliable and scientifically proven to be stable over the expected lifetime in which the waste remains active. Public confidence in nuclear energy will only be enhanced if this process can be proved to be safe and environmentally sound. However the required storage times for many spent fuel waste forms is so much longer than the 60 years or so that waste has so far been produced by nuclear power that it is not possible to verify this by direct experimental observation.This proposal is based on developing computer models of the radiation induced structural changes in the encapsulation materials over long time scales. The main materials to be investigated are borosilicate and iron phosphate glasses and there will also be experimental verification of the models for these materials. Borosilicate glasses are typically used but iron phosphate may be a new candidate waste form that could enhance high level waste loading.Using a combination of computer models and experiments to investigate these encapsulation materials, we will be able to make predictions that will enable engineers to choose the most appropriate materials for long time structural integrity and help boost public confidence in this vital part of nuclear technology.

乏核废料的封装及其多年储存是核能技术的一个重要方面。至关重要的是，该过程必须可靠，并且经过科学证明，在废物保持活性的预期寿命内保持稳定。只有证明这一过程是安全且无害环境的，公众对核能的信心才会增强。然而，许多乏燃料废物形式所需的储存时间远远长于60年左右，以至于迄今为止核电产生的废物无法通过直接实验观察来验证这一点。该提议基于开发长期尺度下封装材料中辐射引起的结构变化的计算机模型。主要研究的材料是硼硅酸盐和磷酸铁玻璃，并且还将对这些材料的模型进行实验验证。通常使用硼硅酸盐玻璃，但磷酸铁可能是一种新的候选废物形式，可以增强高放废物负荷。通过结合计算机模型和实验来研究这些封装材料，我们将能够做出预测，使工程师能够选择最合适的材料以实现长期结构完整性，并有助于增强公众对核技术这一重要部分的信心。

项目成果

Simulation of alpha decay of actinides in iron phosphate glasses by ion irradiation

• DOI: 10.1016/j.nimb.2015.11.005
• 发表时间: 2016-03
• 期刊: Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
• 影响因子: 1.3
• 作者: C. Dube;M. Stennett;A. Gandy;N. Hyatt

A new potential for radiation studies of borosilicate glass

• DOI: 10.1016/j.nimb.2016.12.007
• 发表时间: 2017-02
• 期刊: Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
• 影响因子: 1.3
• 作者: Amal F. Alharbi;K. Jolley;Roger Smith;A. Archer;J. K. Christie

Radiation tolerance of iron phosphate: a study of amorphous and crystalline structures

• DOI: 10.1016/j.jnucmat.2016.07.028
• 发表时间: 2016-10
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: K. Jolley;Roger Smith

Iron phosphate glasses: Structure determination and displacement energy thresholds, using a fixed charge potential model

• DOI: 10.1016/j.jnoncrysol.2014.12.033
• 发表时间: 2015-03-01
• 期刊: JOURNAL OF NON-CRYSTALLINE SOLIDS
• 影响因子: 3.5
• 作者: Joseph, Kitheri;Jolley, Kenny;Smith, Roger
• 通讯作者: Smith, Roger

Radiation stability study on cerium loaded iron phosphate glasses by ion irradiation method

• DOI: 10.1007/s10967-020-07012-z
• 发表时间: 2020-01
• 期刊: Journal of Radioanalytical and Nuclear Chemistry
• 影响因子: 1.6
• 作者: C. Dube;M. Stennett;A. Ananthanarayanan;C. David;J. Shah;N. Hyatt