论文标题
$^{95} $ ru，$^{95} $ tc和$^{95m} $ tc的高精度半衰
High precision half-life measurement of $^{95}$Ru, $^{95}$Tc and $^{95m}$Tc with $γ$-spectroscopy
论文作者
论文摘要
对反应产物的半衰期的精确知识对于使用激活技术进行的核反应横截面测量至关重要。最近使用这种实验方法测量了$^{92} $ MO（$α$，n）$^{95} $ ru反应的横截面。初步结果表明，$^{95} $ ru的文献半衰期大约半个世纪以前被高估了。因此，使用$γ$ -SpectRoscopery测量了$^{95} $ ru的半衰期及其女儿同位素$^{95} $ TC和$^{95M} $ TC。结果为t $ _ {1/2} $ = 1.6033 $ \ pm $ 0.0044 h对于$^{95} $ ru，t $ _ {1/2} $ = 19.258 $ = 19.258 $ \ pm $ 0.026 h，for $^{95} $ tc {95} $ tc＆t $ _ {1/2 $ _ {1/2} $ {1/2} $ = 61 $ = 61.96 $ = 61.96 $^{95M} $ TC。半衰期值的精度已提高，因此最近测量的$^{92} $ MO（$α$，n）$^{95} $ ru激活横截面将变得更加精确。
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($α$,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 $γ$-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($α$,n)$^{95}$Ru activation cross section will become more precise.
