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

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.
Authors:
 [1] ; ;  [2] ;  [3] ; ; ;  [2] ;  [3] ; ; ;  [2] ; ;  [3] ; ;  [2] ; ;  [3] ;  [2]
  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)
Publication Date:
OSTI Identifier:
22472163
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 78; Journal Issue: 6; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CADMIUM 106; DATA ANALYSIS; ELECTRON CAPTURE; GAMMA SPECTROSCOPY; HIGH-PURITY GE DETECTORS; KEV RANGE; NUCLEAR DECAY; UNDERGROUND