Âderna Fìzika ta Energetika (Jun 2011)
First results of the experiment to search for 2β decay of 106Cd with the help of 106CdWO4 crystal scintillators
- P. Bell,
- R. Bernabei,
- R. S. Boiko,
- V. B. Brudanin,
- F. Cappella,
- V. Caracciolo,
- R. Cerulli,
- D. M. Chernyak,
- F. A. Danevich ,
- S. d'Angelo,
- A. E. Dossovitskiy,
- E. N. Galashov,
- A. Incicchitti,
- V. V. Kobychev,
- S. S. Nagorny,
- F. Nozzoli,
- B. N. Kropivyansky,
- V. M. Kudovbenko,
- A. L. Mikhlin,
- A. S. Nikolaiko,
- D. V. Poda,
- O. G. Polischuk,
- D. Prosperi,
- V. N. Shlegel,
- Yu. G. Stenin,
- J. Suhonen,
- V. I. Tretyak,
- Ya. V. Vasiliev,
- R. B. Podviyanuk
Affiliations
- P. Bell
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “Tor Vergata”, Rome, Italy
- R. Bernabei
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “Tor Vergata”, Rome, Italy; Dipartimento di Fisica, Università di Roma “Tor Vergata”, Rome, Italy
- R. S. Boiko
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- V. B. Brudanin
- Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
- F. Cappella
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “La Sapienza”, Rome, Italy; Dipartimento di Fisica, Università di Roma “La Sapienza”, Rome, Italy
- V. Caracciolo
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, Assergi (AQ), Italy
- R. Cerulli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, Assergi (AQ), Italy
- D. M. Chernyak
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- F. A. Danevich
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- S. d'Angelo
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “Tor Vergata”, Rome, Italy; Dipartimento di Fisica, Università di Roma “Tor Vergata”, Rome, Italy
- A. E. Dossovitskiy
- Joint Stock Company NeoChem, Moscow, Russia
- E. N. Galashov
- Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
- A. Incicchitti
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “La Sapienza”, Rome, Italy; Dipartimento di Fisica, Università di Roma “La Sapienza”, Rome, Italy
- V. V. Kobychev
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- S. S. Nagorny
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- F. Nozzoli
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “Tor Vergata”, Rome, Italy
- B. N. Kropivyansky
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- V. M. Kudovbenko
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- A. L. Mikhlin
- Joint Stock Company NeoChem, Moscow, Russia
- A. S. Nikolaiko
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- D. V. Poda
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- O. G. Polischuk
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- D. Prosperi
- Istituto Nazionale di Fisica Nucleare, Sezione Roma “La Sapienza”, Rome, Italy; Dipartimento di Fisica, Università di Roma “La Sapienza”, Rome, Italy
- V. N. Shlegel
- Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
- Yu. G. Stenin
- Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
- J. Suhonen
- Department of Physics, University of Jyväskylä, Jyväskylä, Finland
- V. I. Tretyak
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Ya. V. Vasiliev
- Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
- R. B. Podviyanuk
- Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Journal volume & issue
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Vol. 12,
no. 2
pp. 124 – 128
Abstract
An experiment to search for 2β processes in 106Cd with the help of 106CdWO4 crystal scintillator (mass of 215 g), enriched in 106Cd 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 106Cd have been established on the level of 1019 − 1020 yr, in particular (all the results at 90 % C.L.): T1/2(0ν2ε) > 3.6 · 1020 yr, T1/2(2νεβ+) > 7.2 · 1019 yr, and T1/2(2ν2β+) > 2.5 · 1020 yr. Resonant 0ν2ε processes have been restricted as T1/2(0ν2K) > 1.4 · 1020 yr and T1/2(0νLK) > 3.2 · 1020 yr. A possible resonant enhancement of the 0ν2ε processes is estimated in the framework of the QRPA approach.
