First Results of the Experiment to Search for 2{beta} Decay of {sup 106}Cd with the Help of {sup 106}CdWO{sub 4} Crystal Scintillators

Journal Article · Wed Nov 24 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3527222· OSTI ID:21506865

Belli, P; Nozzoli, F ^[1]; Bernabei, R; D'Angelo, S ^[1]; Boiko, R S; Chernyak, D M; Danevich, F A; Kobychev, V V; Nagorny, S S; Kropivyansky, B N; Kudovbenko, V M; Nikolaiko, A S; Podviyanuk, R B; Polischuk, O G; Tretyak, V I ^[2]; Brudanin, V B ^[3]; Cappella, F; Incicchitti, A; Prosperi, D ^[4]; Caracciolo, V ^[5]

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1. INFN sezione Roma Tor Vergata, I-00133 Rome (Italy)
2. Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine)
3. Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
4. INFN, sezione Roma 'La Sapienza', I-00185 Rome (Italy)
5. INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi (Italy)

An experiment to search for 2b processes in {sup 106}Cd with the help of {sup 106}CdWO{sub 4} crystal scintillator (mass of 215 g), enriched in {sup 106}Cd up to 66%, is in progress at the Gran Sasso National Laboratories of the INFN (Italy). After 1320 h of data taking, limits on double beta processes in {sup 106}Cd have been established on the level of 10{sup 19}-10{sup 20} yr, in particular (all the results at 90% C.L.): T{sub 1/2}(0{nu}2{epsilon})>3.6x10{sup 20} yr, T{sub 1/2}(2{nu}{epsilon}{beta}{sup +})>7.2x10{sup 19} yr, and T{sub 1/2}(2{nu}2{beta}{sup +})>2.5x10{sup 20} yr. Resonant 0{nu}2{epsilon} processes have been restricted as T{sub 1/2}(0{nu}2K)>1.4x10{sup 20} yr and T{sub 1/2}(0{nu}LK)>3.2x10{sup 20} yr. A possible resonant enhancement of the 0{nu}2{epsilon} processes is estimated in the framework of the QRPA approach.

• OSTI ID: 21506865
• Journal Information: AIP Conference Proceedings, Vol. 1304, Issue 1; Conference: Carpathian summer school of physics - Exotic nuclei and nuclear/particle astrophysics (III): From nuclei to stars, Sinaia (Romania), 20 Jun - 3 Jul 2010; Other Information: DOI: 10.1063/1.3527222; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CADMIUM 106
CADMIUM TUNGSTATES
CRYSTALS
DOUBLE BETA DECAY
MASS
NEUTRINOS
PHOSPHORS
PHOTOMULTIPLIERS
BETA DECAY
BETA-MINUS DECAY
CADMIUM COMPOUNDS
CADMIUM ISOTOPES
DECAY
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
INORGANIC PHOSPHORS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
MASSLESS PARTICLES
NUCLEAR DECAY
NUCLEI
OXYGEN COMPOUNDS
PHOTOTUBES
REFRACTORY METAL COMPOUNDS
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS