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首页> 外文期刊>Journal of Research of the National Institute of Standards and Technology >A Compendium on the NIST Radionuclidic Assays of the Massic Activity of63Ni and 55Fe Solutions Used for an International Intercomparison of Liquid Scintillation Spectrometry Techniques
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A Compendium on the NIST Radionuclidic Assays of the Massic Activity of63Ni and 55Fe Solutions Used for an International Intercomparison of Liquid Scintillation Spectrometry Techniques

机译：关于用于液体闪烁光谱技术国际比较的63Ni和55Fe溶液质量活性的NIST放射性核素分析简编

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摘要

The National Institute of Standards and Technology recently participated in an inter-national measurement iniercomparison for MNi and 35Fe, which was conducted amongst principal national radionuclidic metrology laboratories, The intercompari-son was sponsored by EUROMET, and was primarily intended to evaluate the capabili-ties of liquid scintillation (LS) spectrometry techniques for standardizing nuclides that decay by low-energy )3-emission (like 63Ni) and by low-Z (atomic number) electron capture (like "Fe). The intercomparison findings exhibit a very good agreement for MNi amongst the various participating labo-ratories, including that for NIST, which suggests that the presently invoked LS methodologies are very capable of provid-ing internationally-compatible standardiza-tions for low-energy /3-emitters. The results for "Fe are in considerably poorer agree-ment, and demonstrated the existence of several unresolved problems. It has thus be-come apparent that there is a need for the various international laboratories to conduct rigorous, systematic evaluations of their LS capabilities in assaying radionuclides that decay by low-Z electron capture.
机译：美国国家标准技术研究院最近参加了主要的国家放射性核计量学实验室之间进行的MNi和35Fe的国际测量比对，该比对是由EUROMET赞助的，其主要目的是评估能力闪烁（LS）光谱技术用于标准化因低能（3-）发射（如63Ni）和低Z-（原子序数）电子捕获（如“ Fe”）衰减的核素的比较结果显示出非常好的一致性MNI在包括NIST在内的各种参与实验室中进行了研究，这表明当前调用的LS方法非常有能力为低能量/ 3发射体提供国际兼容的标准化。他们之间的共识要差得多，并且证明存在一些未解决的问题。因此，显而易见的是，各个国际实验室都需要对它们的LS能力进行严格的系统评估，以评估因低Z电子捕获而衰减的放射性核素。

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