First search for $2\epsilon$ and $\epsilon {\beta }^{+}$ decay of ${}^{174}$Hf

F. A. Danevich, M. Hult, D. V. Kasperovych +7

The first ever search for $2\epsilon$ and $\epsilon {\beta }^{+}$ decay of ${}^{174}$Hf was realized using a high-pure sample of hafnium (with mass 179.8 g) and the ultra low-background…