Abstract
A new experiment devoted to searches for double electron capture in 106Cd decay is being performed at the Modane underground laboratory (4800 mwe) with the 32-detector TGV-2 spectrometer. The limit T 1/2(2νEC/EC) > 2.0×1020 yr at a 90%confidence level (C.L.) was obtained from a preliminary analysis of data obtained over 2250 h of measurements with about 23.2 g sample enriched in the isotope 106Cd to 99.57%. The limits T 1/2(KL, 2741 keV) > 0.9 × 1020 yr and T 1/2(KK, 2718 keV) ≫ 1.4 × 1020 yr at a 90% C.L. on the neutrinoless decay of 106Cd were obtained from measurements performed with the Obelix low-background spectrometer from high-purity germanium (HPGe spectrometer) for a sample of mass about 23.2 g enriched in the isotope 106Cd.
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Original Russian Text © Ch. Briançon, V.B. Brudanin, V.G. Egorov, J.M. Jose, A.A. Klimenko, A. Kovalik, S.V. Rosov, E.N. Rukhadze, N.I. Rukhadze, A.V. Salamatin, V.V. Timkin, L. Fajt, R. Hodak, F. Šimkovic, Yu.A. Shitov, M. Špavorova, I. Štekl, E.A. Yakushev, 2015, published in Yadernaya Fizika, 2015, Vol. 78, No. 9, pp. 791–796.
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Briançon, C., Brudanin, V.B., Egorov, V.G. et al. New search for double electron capture in 106Cd decay with the TGV-2 spectrometer. Phys. Atom. Nuclei 78, 740–745 (2015). https://doi.org/10.1134/S1063778815060058
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DOI: https://doi.org/10.1134/S1063778815060058