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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Actinide transmutation properties of thermal and fast fission reactors including multiple recycling
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Actinide transmutation properties of thermal and fast fission reactors including multiple recycling

机译：热裂变反应堆的including系元素trans变特性，包括多次循环

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摘要

To decrease the long-term radiotoxicity risk from nuclear waste, investigations were performed to transmute long-lived radwaste nuclides: actinides. in particular isotopes of Pu, Np, Am, and fission products, to short-lived or stable nuclei. First, from neutron spectra and resulting neutron reaction cross-sections, transmutation half-lives, and fission-to-capture ratios, the priority of fast over thermal reactors with respect to transmutation is derived. Second, transmutation calculations for a park of PWRs and fast CAPRA burner reactors show the ability of CAPRAs to reduce Pu and minor actinides with homogeneous multiple recycling of Pu and Np and heterogeneous multiple recycling of Am. Accumulation of Ist generation PWR-Pu is stopped. Because of Pu deterioration, reactivity requirements and Pu less than or equal to 45 % in (U,Pu)-MOX, 58 % of 'bad quality' and proliferation-resistant Pu from reprocessing of spent CAPRA fuel has to be excluded from recycling. Homogeneous 5 % admiring of Np results in a constant-level Np park inventory. The relatively large consumption of Am is counteracted by a significant in-core production of Am, resulting in a net increase of park Am. (C) 1998 Elsevier Science S.A. [References: 11]
机译：为了降低核废料的长期放射毒性风险，进行了研究以转化长寿命的放射性废物核素：act系元素。特别是Pu，Np，Am和裂变产物的同位素，形成短寿命或稳定的原子核。首先，从中子谱图和所得的中子反应截面，trans变半衰期以及裂变与俘获比，推导出快于热反应堆的trans变优先级。其次，对压水堆和快速CAPRA燃烧器反应堆进行的calculation变计算表明，CAPRA具有还原Pu和次act系元素的能力，具有Pu和Np的均质多次循环以及Am的异质多次循环。第一代PWR-Pu的累积停止。由于Pu的劣化，对反应性的要求以及（U，Pu）-MOX中Pu的含量小于或等于45％，必须将废CAPRA燃料的后处理中58％的“劣质”和抗扩散Pu排除在外。均匀欣赏5％的Np可使Np公园库存保持恒定水平。 Am的核心生产量抵消了Am相对较大的消耗，导致Park Am的净增加。 （C）1998 Elsevier Science S.A. [参考：11]

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