paper

First search for $2 ε$ and $\varepsilonÎ²^+$ decay of $^{174}$ Hf

arXiv:2001.06301 · doi:10.1016/j.nuclphysa.2020.121703

Abstract

The first ever search for $2 ε$ and $\varepsilonÎ²^+$ 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 $lim T_{1/2} \sim 1 0^{16} - 1 0^{18}$ a.

16 pages, 9 figures, 3 Tables

First search for 2ε and $\varepsilonÎ²^+$ decay of 174Hf

Abstract

First search for $2 ε$ and $\varepsilonÎ²^+$ decay of $^{174}$ Hf