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arXiv · 1803.08845

On the emission probability of the 66.7 keV γ-transition in the decay of 171Tm

I. Kajan·S. Heinitz·R. Dressler·P. Reichel·N. Kivel·D. Schumann
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Abstract

The γ-emission probability of the 66.73 keV line in the decay of 171Tm has been experimentally determined using γ-spectrometry and inductively coupled mass spectrometry. Using a set of two reference sources, namely 60Co as primary standard and 44Ti/44Sc in secular equilibrium as secondary standards, we were able to deduce the detection efficiency at 67.87 keV of the used γ-spectrometry setup with high precision. The emission probability of the 66.73 keV γ-transition in the decay of 171Tm has been determined with a set of three radioisotopically pure 171Tm samples to be 0.159(6) %.

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I. Kajan, S. Heinitz, R. Dressler, P. Reichel, N. Kivel, D. Schumann. 2018-03-23. On the emission probability of the 66.7 keV γ-transition in the decay of 171Tm. https://doi.org/10.1103/physrevc.98.055802

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