Search for double electron capture of 106Cd

Search for double- β decay processes in 108Cd and 114Cd with the help of the low-background CdWO 4 crystal scintillator

“…The counting rate ≈ 24 counts/s below the energy ≈ 0.65 MeV is mainly due to the β decay of 113 Cd m with activity 116(4) Bq/kg. Contamination of the enriched 106 Cd by the β active 113 Cd m has been found in the low background TGV experiment [64], where β particles and X rays from thin foils of the enriched 106 Cd were measured by planar Ge detectors; part of this material was used to produce the 106 CdWO 4 crystal.…”

Search for double-βdecay processes in106Cd with the help of a106CdWOBelli1, Bernabei2, Boiko3 et al. 2012Phys. Rev. CSelf Cite

“…The counting rate of ≈24 counts/s below the energy of ≈0.65 MeV is mainly caused by the β decay of 113 Cd m with activity of 116(4) Bq/kg. Contamination of enriched 106 Cd by β active 113 Cd m was found in the low-background TGV experiment [64], where β particles and x rays from thin foils of enriched 106 Cd were measured by planar Ge detectors; part of this material was used to produce the 106 CdWO 4 crystal.…”

Search for Double Beta Decay of 106Cd with an Enriched 106CdWO4 Crystal Scintillator in Coincidence with CdWO4 Scintillation Counters

“…The main goal of the TGV-2 experiment, which is located at the Modane underground laboratory, is the search for 2ν2EC decay of 106 Cd (a decay channel expected to be the fastest one) with the help of 32 planar HPGe detectors with a total sensitive volume ≈ 400 cm 3 . In the first stage of the experiment, foils of cadmium enriched in 106 Cd to (60-75)% were used [27][28][29]; now, 23.2 g of cadmium sample enriched in 106 Cd to 99.57% are installed in the set-up [30]. The experiment gives the strongest limit on the 2ν2EC decay: T 1/2 > 4.7 × 10 20 yr. For other decay modes and channels, the sensitivity is at level of 10 20 yr [31].…”