A novel chronometry technique for dating irradiated uranium fuels using Cm isotopic ratios
A novel chronometry technique for dating irradiated uranium fuels using Cm isotopic ratios
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DOI：
10.1007/s10967-019-06767-4
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发表时间：
2019-12-01
影响因子：
1.6
通讯作者：
Synal, Hans-Arno
中科院分区：
文献类型：
--
作者：
Christl, Marcus;Guerin, Nicolas;Synal, Hans-Arno
发展了一种新的计时法测定辐照核燃料的年龄。它基于两个Cm同位素比值（Cm-244/Cm-246和Cm-245/Cm-246）的测量，并且不需要添加产额示踪剂。该方法依赖于Cm-244的衰变，而Cm-245/Cm-246的比率在辐照后被认为是恒定的。使用具有已知辐照历史的不同类型的辐照燃料证明了可行性。到目前为止，已达到5年的精度，但已确定有明显的改进潜力。新的计时方法是一个有前途的替代现有的核材料测年技术。
A novel chronometry method is developed to date irradiated nuclear fuels. It is based on the measurement of two Cm isotopic ratios (Cm-244/Cm-246 and Cm-245/Cm-246) and does not require the addition of a yield tracer. The method relies on the decay of Cm-244 while the Cm-245/Cm-246 ratio is considered constant after irradiation. Feasibility is demonstrated using different types of irradiated fuels with known irradiation history. A precision of 5 year is reached so far but clear potential for improvement has been identified. The novel chronometry method represents a promising alternative to existing dating techniques for nuclear materials.