Phys.Rev. C 92, 065503 (2015)

S.W.Finch, W.Tornow

Search for neutrinoless double-electron capture of ¹⁵⁶Dy

RADIOACTIVITY ¹⁵⁶Dy(2EC); measured Eγ, Iγ using two clover HPGe detectors surrounded by a NaI annulus at the Kimballton Underground Research Facility (KURF). Enriched ¹⁵⁶Dy sample; analyzed γ and γγ-coin spectra; deduced no counts above background, set upper limits of partial half-lives for population of different states in ¹⁵⁶Dy in 0νϵϵ decay mode.

doi: 10.1103/PhysRevC.92.065503