New search for double electron capture in {sup 106}Cd decay with the TGV-2 spectrometer

Journal Article · Tue Sep 15 04:00:00 EDT 2015 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778815060058· OSTI ID:22472163

Briançon, Ch. ^[1]; Brudanin, V. B.; Egorov, V. G. ^[2]; Jose, J. M. ^[3]; Klimenko, A. A.; Kovalik, A.; Rosov, S. V. ^[2]; Rukhadze, E. N. ^[3]; Salamatin, A. V.; Timkin, V. V. ^[2]; Fajt, L.; Hodak, R. ^[3]; Šimkovic, F.; Shitov, Yu. A. ^[2]; Špavorova, M.; Štekl, I. ^[3]; Yakushev, E. A. ^[2]

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1. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (France)
2. Joint Institute for Nuclear Research (Russian Federation)
3. Czech TechnicalUniversity in Prague (CTU), Institute of Experimental and Applied Physics (Czech Republic)

A new experiment devoted to searches for double electron capture in {sup 106}Cd decay is being performed at the Modane underground laboratory (4800 mwe) with the 32-detector TGV-2 spectrometer. The limit T{sub 1/2}(2νEC/EC) > 2.0×10{sup 20} 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 {sup 106}Cd to 99.57%. The limits T{sub 1/2}(KL, 2741 keV) > 0.9 × 10{sup 20} yr and T{sub 1/2}(KK, 2718 keV) ≫ 1.4 × 10{sup 20} yr at a 90% C.L. on the neutrinoless decay of {sup 106}Cd 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 {sup 106}Cd.

• OSTI ID: 22472163
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 6 Vol. 78; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CADMIUM 106
DATA ANALYSIS
ELECTRON CAPTURE
GAMMA SPECTROSCOPY
HIGH-PURITY GE DETECTORS
KEV RANGE
NUCLEAR DECAY
UNDERGROUND