γ射线光谱法中圆柱形体积样品的真符合和校正

Radioisotopes Pub Date : 2020-09-15 DOI:10.3769/RADIOISOTOPES.69.287

Takashi Yamada, M. Asai, C. Yonezawa, K. Kakita, S. Hirai

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摘要

日本分析化学学会进行了“关于134铯的真实重合和效应修正的合作实验”，以调查国际比对中认证标准物质134铯放射性活性低估的原因。本文对协同实验的分析结果进行了检验，证实了使用商业伽玛射线分析程序的TCS校正不充分是造成低估的原因。本文发展并提出了一种考虑样品体积的通用锗探测器的实用TCS校正方法，并检验了该方法的有效性，证实了该方法的低估可以降低到1%以下。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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True Coincidence Summing Correction for Cylindrical Volume Samples in γ-ray Spectrometry

The Japan Society for Analytical Chemistry conducted ʻ The Collaborative Experiment on a Correction of the True Coincidence Summing Eﬀect for 134 Cs ʼ to investigate the causes of the underestimation of 134 Cs radio-activity of the certiﬁed reference material in the International Inter-Comparison Exercise. This work examined the analysis results of the collaborative experiment, and conﬁrmed that it is the cause of the underestimation that the true coincidence summing (TCS) correction is not suﬃcient because the TCS correction of using com mercial gamma ray analysis programs do not consider the sample volume. This work developed and proposed the practical TCS correction method for general Ge detectors that considers the sample volume and examined the eﬀectiveness of the method and conﬁrmed that the underestimation can be reduced to less than 1 ％ .

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