论文标题
首先搜索$ 2 \ varepsilon $和$ \varepsilonβ^+$ $ decay的$^{174} $ hf
First search for $2\varepsilon$ and $\varepsilonβ^+$ decay of $^{174}$Hf
论文作者
论文摘要
有史以来首次搜索$ 2 \ varepsilon $和$ \varepsilonβ^+$ $ nf的$^{174} $ hf是使用高纤维样本的Hafnium（质量为179.8 g）和Ultra低背部HPGE-tectoctor System的225 m地下地下的。在75天的数据后，无法检测到双重β衰减转变的指示，但是将不同通道和衰减模式的半衰期的下限设置为$ \ lim t_ {1/2} \ sim 10^{16} {16} -10} -10} -10^{18} $ a。
The first ever search for $2\varepsilon$ and $\varepsilonβ^+$ decay of $^{174}$Hf was realized using a high-pure sample of hafnium (with mass 179.8 g) and the ultra low-background HPGe-detector system located 225 m underground. After 75 days of data taking no indication of the double beta decay transitions could be detected but lower limits for the half-lives of the different channels and modes of the decays were set on the level of $\lim T_{1/2}\sim 10^{16}-10^{18}$ a.
