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

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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Cited by in corpus (1)

• Estimation of Ru-97 Half-Life Using the Most Frequent Value Method and Bootstrapping Techniques