Experiment TGV II—results of Phases I and II

Currently, the TGV collaboration is investigating the two‐neutrino double electron capture (2vEC/EC) of 106Cd at the Modane underground laboratory. The study is performed with low‐background multi‐HPGe detector TGV II, which has been constructed for measurements of the rare processes. The half‐life limits of T1/2>2.6×1020 years (for Phase I, 8687 hours) and T1/2>3.6×1020 years (for Phase II, 9003 hours) were obtained for the ground state to ground state 2vEC/EC of 106Cd. The results already allow to rule out some of the previous nuclear structure calculations.