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Title: Investigations of 2β decay of {sup 106}Cd and {sup 58}Ni with HPGe spectrometer OBELIX

Investigations of double beta decay processes to excited states of daughter nuclei were performed at the Modane underground laboratory (LSM, France, 4800 m w.e.) using the high sensitivity spectrometer OBELIX [1], which is a common activity of JINR Dubna, IEAP CTU in Prague and LSM. The spectrometer is based on the HPGe detector with the sensitive volume of 600 cm{sup 3} and relative efficiency of 160%. Investigation of resonant neutrino-less double electron capture of {sup 106}Cd was performed with ∼23.2 g of {sup 106}Cd (enrichment of 99.57%) during ∼17 days. The experiment with natural Ni (∼21.7 kg of mass) was also carried out during ∼47 days. The preliminary experimental limits for 0νEC/EC resonant decay to the excited states of {sup 106}Pd and different modes of β β decay {sup 58}Ni are presented.
Authors:
; ; ; ;  [1] ; ; ; ; ; ; ;  [2] ;  [3] ;  [4] ; ;  [3]
  1. Institute of Experimental and Applied Physics, CTU in Prague, Horska 3a/22, 128 00 Prague 2 (Czech Republic)
  2. Joint Institute of Nuclear Research, 141980 Dubna (Russian Federation)
  3. Laboratoire Souterrain de Modane, 73500 Modane (France)
  4. (France)
Publication Date:
OSTI Identifier:
22488729
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1672; Journal Issue: 1; Conference: LRT 2015: 5. international workshop in low radioactivity techniques, Seattle, WA (United States), 18-20 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CADMIUM 106; DOUBLE BETA DECAY; ELECTRON CAPTURE; EXCITED STATES; FRANCE; HIGH-PURITY GE DETECTORS; JINR; MULTIPARTICLE SPECTROMETERS; NEUTRINOS; NICKEL 58; PALLADIUM 106; SENSITIVITY; UNDERGROUND