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Title: Search for double beta processes in {sup 106}Cd with enriched {sup 106}CdWO{sub 4} crystal scintillator in coincidence with four crystals HPGe detector

A radiopure cadmium tungstate crystal scintillator, enriched in {sup 106}Cd ({sup 106}CdWO{sub 4}), was used to search for double beta decay processes in {sup 106}Cd in coincidence with an ultra-low background set-up containing four high purity germanium (HPGe) detectors in a single cryostat. The experiment has been completed after 13085 h of data taking. New improved limits on most of the double beta processes in {sup 106}Cd have been set on the level of 10{sup 20}−10{sup 21} yr. Tn particular, the half-life limit on the two neutrino electron capture with positron emission, T{sub 1/2} ≥ 1.8 × 10{sup 21} yr, reached the region of theoretical predictions.
Authors:
; ;  [1] ; ; ;  [2] ;  [3] ;  [4] ; ; ; ;  [5] ;  [6] ;  [3] ;  [1] ;  [7] ; ;  [1] ;  [3] ;  [8]
  1. Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine)
  2. Dipartimento di Fisica, Università di Roma ”Tor Vergata”, I-00133 Rome (Italy)
  3. (Italy)
  4. Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
  5. INFN, Laboratori Nazionali del Gran Sasso, I-67100 Assergi (AQ) (Italy)
  6. INFN, sezione di Roma ”La Sapienza”, I-00185 Rome (Italy)
  7. (France)
  8. Institute of Scintillation Materials, 61001 Kharkiv (Ukraine)
Publication Date:
OSTI Identifier:
22492661
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1686; Journal Issue: 1; Conference: MEDEX'15: Workshop on calculation of double-beta-decay matrix elements, Prague (Czech Republic), 9-12 Jun 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CADMIUM 106; CADMIUM TUNGSTATES; CRYOSTATS; DOUBLE BETA DECAY; ELECTRON CAPTURE; EMISSION; FORECASTING; HALF-LIFE; HIGH-PURITY GE DETECTORS; POSITRONS