First search for double-β decay of 184Os and 192Os
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- 作者：P. Belli (1)
R. Bernabei (1) (2)
F. Cappella (3) (4)
R. Cerulli (5)
F. A. Danevich (6)
S. d’Angelo (1) (2)
A. Di Marco (1) (2)
A. Incicchitti (3) (4)
G. P. Kovtun (7)
N. G. Kovtun (7)
M. Laubenstein (5)
D. V. Poda (6)
O. G. Polischuk (3) (6)
A. P. Shcherban (7)
V. I. Tretyak (6) - 刊名：The European Physical Journal A - Hadrons and Nuclei
- 出版年：2013
- 出版时间：February 2013
- 年：2013
- 卷：49
- 期：2
- 全文大小：620KB
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R. Bernabei (1) (2)
F. Cappella (3) (4)
R. Cerulli (5)
F. A. Danevich (6)
S. d’Angelo (1) (2)
A. Di Marco (1) (2)
A. Incicchitti (3) (4)
G. P. Kovtun (7)
N. G. Kovtun (7)
M. Laubenstein (5)
D. V. Poda (6)
O. G. Polischuk (3) (6)
A. P. Shcherban (7)
V. I. Tretyak (6)
1. INFN, Sezione di Roma “Tor Vergata- I-00133, Rome, Italy
2. Dipartimento di Fisica, Università di Roma “Tor Vergata- I-00133, Rome, Italy
3. INFN, Sezione di Roma “La Sapienza- I-00185, Rome, Italy
4. Dipartimento di Fisica, Università di Roma “La Sapienza- I-00185, Rome, Italy
5. INFN, Laboratori Nazionali del Gran Sasso, 67100, Assergi, Italy
6. Institute for Nuclear Research, 03680, Kyiv, Ukraine
7. National Science Center “Kharkiv Institute of Physics and Technology- 61108, Kharkiv, Ukraine - ISSN：1434-601X
文摘
A search for double-β decay of osmium has been realized for the first time with the help of an ultra-low background HPGe γ detector at the underground Gran Sasso National Laboratories of the INFN (Italy). After 2741 h of data taking with a 173 g ultra-pure osmium sample limits on double-β processes in 184Os have been established at the level of T 1/2 ?1014-1014 y. Possible resonant double-electron captures in 184Os were searched for with a sensitivity of T 1/2 ?1016 y. A half-life limit T 1/2?.3×1019 y was set for the double-β decay of 192Os to the first excited level of 192Pt . The radiopurity of the osmium sample has been investigated and radionuclides 137Cs , 185Os and 207Bi were detected in the sample, while activities of 40K , 60Co , 226Ra and 232Th were limited at the ?mBq/kg level.