通过三种基于液体闪烁的方法对碘 - 124进行标准化。
Standardization of I-124 by three liquid scintillation-based methods.
作者信息
Bergeron D E, Cessna J T, Fitzgerald R, Pibida L, Zimmerman B E
机构信息
Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
出版信息
Appl Radiat Isot. 2019 Dec;154:108849. doi: 10.1016/j.apradiso.2019.108849. Epub 2019 Aug 9.
A solution of I was standardized for activity by 4πβ(LS)-γ(NaI) live-timed anticoincidence (LTAC) counting, with confirmatory measurements by triple-to-double coincidence ratio (TDCR) and CIEMAT-NIST efficiency tracing (CNET) liquid scintillation counting. The LTAC-based standard was shown to be in agreement (within k = 1 uncertainties) with previous measurements at NIST and elsewhere. Calibration settings for radionuclide calibrators were determined and a discrepancy with literature values, partially due to a calibration methodology dependent upon an erroneous setting for F, was identified and explained.
通过4πβ(LS)-γ(NaI)活时间反符合(LTAC)计数对I溶液的活性进行标准化，并通过三到双符合比(TDCR)和CIEMAT-NIST效率追踪(CNET)液体闪烁计数进行验证测量。结果表明，基于LTAC的标准与美国国家标准与技术研究院(NIST)和其他地方的先前测量结果一致(在k = 1不确定度范围内)。确定了放射性核素校准器的校准设置，并发现并解释了与文献值的差异，部分原因是校准方法依赖于错误的F设置。
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