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首页> 外文会议>Conference on Plutonium Futures - The Science >A comparison of plutonium abundance in soil from sites in the United Kingdom measured with high-efficiency, highresolution γ-ray spectroscopy, neutron assay and accelerator mass spectrometry
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A comparison of plutonium abundance in soil from sites in the United Kingdom measured with high-efficiency, highresolution γ-ray spectroscopy, neutron assay and accelerator mass spectrometry

机译：用高效，高次荧光光谱，中子测定和加速器质谱法测定英国地点土壤钚丰度的比较

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We have measured plutonium abundance in soils from sitesin the UK including samples on site at the former fastreactor site at Dounreay, off-site nearby and elsewhere inthe UK. All assessments are consistent with estimates ofthe average abundance in soils arising from the fallout ofweapons tests, severe accidents and natural processesstimulated in natural ores.We also observe much lower measurements forplutonium abundance (~(239)Pu) via the AMS technique thanfor the BEGe method: preliminary analysis indicates thatcontamination of the γ-ray line(s) used in the BEGe analysisis a likely cause for the over-estimation in the γ-rayassessments. The levels estimated via the AMS techniqueare consistent with earlier reports in the literature associatedwith long-term studies of legacy nuclear sites , uraniumore deposits and slightly exceed those inferred from~(240)Pu/~(239)Pu ratios from lake sediments .
机译：我们在遗址的土壤中测量了钚丰富在英国，包括在前者的现场样品反应堆网站在DounReay，附近的场外和其他地方英国。所有评估均符合估计从辐射产生的土壤中的平均丰度武器测试，严重事故和自然过程在天然矿石中刺激。我们也观察到更低的测量钚丰富（〜（239）PU）通过AMS技术而不是对于Bege方法：初步分析表明Bege分析中使用的γ射线线的污染是γ射线过度估计的可能原因评估。通过AMS技术估计的水平与文献相关的早期报告一致随着遗产核遗址的长期研究，铀矿石沉积物略微超过那些推断的人〜（240）PU /〜（239）苏丹沉积物的PU比率。

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