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

Journal Article · Wed Oct 28 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4934895· OSTI ID:22492661

Chernyak, D. M.; Mokina, V. M. ^[1]; Belli, P.; Bernabei, R.; D’Angelo, S. ^[2]; Brudanin, V. B. ^[3]; Cappella, F.; Caracciolo, V.; Cerulli, R.; Laubenstein, M. ^[4]; Incicchitti, A. ^[5]; Poda, D. V. ^[1]; Polischuk, O. G.; Tretyak, V. I. ^[1]; Tupitsyna, I. A. ^[6]

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1. Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine)
2. Dipartimento di Fisica, Università di Roma ”Tor Vergata”, I-00133 Rome (Italy)
3. Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
4. INFN, Laboratori Nazionali del Gran Sasso, I-67100 Assergi (AQ) (Italy)
5. INFN, sezione di Roma ”La Sapienza”, I-00185 Rome (Italy)
6. Institute of Scintillation Materials, 61001 Kharkiv (Ukraine)

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.

• OSTI ID: 22492661
• Journal Information: AIP Conference Proceedings, Vol. 1686, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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