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- Title
A technique for searching for the 2 K capture in Xe with a copper proportional counter.
- Authors
Gavrilyuk, Yu.; Gangapshev, A.; Kazalov, V.; Kuzminov, V.; Panasenko, S.; Ratkevich, S.; Tekueva, D.; Yakimenko, S.
- Abstract
An experimental technique for searching for the 2 K capture in Xe with a large low-background copper proportional counter is described. Such an experiment is conducted at the Baksan Neutrino Observatory of the Institute for Nuclear Research of the Russian Academy of Sciences. The experimental setup is located in the Low-Background Deep-Level Laboratory at a depth of 4900 m.w.e., where the flux of muons of cosmic rays is suppressed by a factor of 10 relative to that at the Earth's surface. The setup incorporates a proportional counter and low-background shielding (18 cm of copper, 15 cm of lead, and 8 cm of borated polyethylene). The results of processing the data obtained in 5 months of live measurement time are presented. A new limit on the half-life of Xe with respect to the 2 K capture is set at the level of 2.5 × 10 years.
- Subjects
COPPER alloys; XENON isotopes; NUCLEAR physics experiments; MUONS; RADIATION shielding
- Publication
Physics of Atomic Nuclei, 2015, Vol 78, Issue 13, p1563
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/S1063778815130098