First search for $2\epsilon$ and $\epsilon {\beta }^{+}$ decay of ${}^{162}$Er and new limit on $2{\beta }^{-}$ decay of ${}^{170}$Er to the first excited level of ${}^{170}$Yb

P. Belli, R. Bernabei, R. S. Boiko +11

The first search for double electron capture ($2\epsilon$) and electron capture with positron emission ($\epsilon {\beta }^{+}$) of ${}^{162}$Er to the ground state and to several excite…