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New limits on double beta decay of Cd-106

Author
Rukhadze N.I. JINR
Bakalyarov A.M. RRC Kurchatov Institute
Briancon Ch. CSNSM Orsay
Brudanin V.B. JINR
Kovalík Alojz, Ing. DrSc. Nuclear Physics Institute of the ASCR, JINR Dubna
Čermák Pavel, Ing. PhD. Institute of Experimental and Applied Physics CTU
Egorov V.G. JINR
Klimenko A.A. JINR
Lebedev V.I. RRC Kurchatov Institute
Mamedov Fadahat, Mgr. Institute of Experimental and Applied Physics CTU
Shitov Yu.A. JINR/Imperial College
Šimkovic F. Comenius University
Štekl Ivan, Doc. Ing. CSc. Institute of Experimental and Applied Physics CTU
Timkin V.V. JINR
Zhukov S.V. RRC Kurchatov Institute

Year
2011

Scientific journal
Nuclear Physics A, 852 (1), 197-206

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Abstract
Investigation of double electron capture in 106Cd was performed at the Modane underground laboratory (4800 m.w.e.) using the multi-detector spectrometer TGV-2. In Phase I of the experiment, ∼10 g of 106Cd
with an enrichment of 75% was measured during 8687 hours. In Phase II, the TGV-2 background was significantly suppressed in comparison with Phase I and the 106Cd mass was increased to ∼13.6 g. New half-life limits (at 90% CL) were obtained for 2νEC/EC decay of 106Cd to the ground state of 106Pd – T1/2 > 3.0 × 10^20 y (Phase I) and T1/2 > 3.6 × 10^20 y (Phase II, 9000 hours), and for 0νEC/EC decay of 106Cd to the 2741 keV excited state of 106Pd – T1/2 > 1.1×10^20 y (Phase II).

Cite article as:
N. Rukhadze, A. Bakalyarov, C. Briancon, V. Brudanin, A. Kovalík, P. Čermák, V. Egorov, A. Klimenko, V. Lebedev, F. Mamedov, Y. Shitov, F. Šimkovic, I. Štekl, V. Timkin, S. Zhukov, "New limits on double beta decay of Cd-106", Nuclear Physics A, 852 (1), 197-206 (2011)