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arXiv · 2010.00876

High precision half-life measurement of $^{95}$Ru, $^{95}$Tc and $^{95m}$Tc with $\gamma$-spectroscopy

T. N. Szegedi·Á. Tóth·G. G. Kiss·Gy. gyürky
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Abstract

The precise knowledge of the half-life of the reaction product is of crucial importance for a nuclear reaction cross section measurement carried out with the activation technique. The cross section of the $^{92}$Mo($\alpha$,n)$^{95}$Ru reaction was measured recently using this experimental approach. The preliminary results indicated that the literature half-life of $^{95}$Ru, derived about half a century ago, is overestimated. Therefore, the half-lives of $^{95}$Ru and its daughter isotope $^{95}$Tc and $^{95m}$Tc have been measured with high precision using $\gamma$-spectroscopy. The results are t$_{1/2}$=1.6033 $\pm$ 0.0044 h for $^{95}$Ru, t$_{1/2}$ = 19.258 $\pm$ 0.026 h for $^{95}$Tc and t$_{1/2}$ = 61.96 $\pm$ 0.24 d for $^{95m}$Tc. The precision of the half-life values has been increased, consequently the recently measured $^{92}$Mo($\alpha$,n)$^{95}$Ru activation cross section will become more precise.

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T. N. Szegedi, Á. Tóth, G. G. Kiss, Gy. gyürky. 2020-10-02. High precision half-life measurement of $^{95}$Ru, $^{95}$Tc and $^{95m}$Tc with $\gamma$-spectroscopy. https://doi.org/10.1140/epja/s10050-020-00188-8

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