Investigation of double beta decay of 58Ni at the Modane Underground Laboratory
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F20%3A00337701" target="_blank" >RIV/68407700:21670/20:00337701 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1742-6596/1342/1/012041" target="_blank" >https://doi.org/10.1088/1742-6596/1342/1/012041</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/1342/1/012041" target="_blank" >10.1088/1742-6596/1342/1/012041</a>
Alternative languages
Result language
angličtina
Original language name
Investigation of double beta decay of 58Ni at the Modane Underground Laboratory
Original language description
Investigation of double beta decay processes (β+EC, EC/EC) of 58Ni was performed at the Modane underground laboratory (LSM, France, 4800 m w.e.). A sample of natural nickel, containing ~68% of 58Ni and a mass of ~21.7 kg, was measured using ultra low-background HPGe detector Obelix (sensitive volume of 600 cm^3) during ~143.8 days. New experimental limits on 2νβ+EC decay of 58Ni to the ground 0+ and 2^+_(1), 811 keV excited state of 58Fe, and 2νEC/EC decay of 58Ni to 2^+_(1), 811 keV and 2^+_(2), 1 675 keV excited states of 58Fe were obtained in this measurement. There are -T1/2(β+EC, 0+ -> 0+) > 1.7 x 10^22 y ;T1/2(β+EC, 0+ -> 2+_(1)) > 2.3 x 10^22 y, T1/2(EC/EC, 0+ -> 2+_(1)) > 3.3 x 10^22 y, T1/2(EC/EC, 0+ -> 2+_(2)) > 3.4 x 10^22 y. For resonant neutrino-less radiative EC/EC decay with energy of 1 918.3 keV a new experimental limit of T1/2 (0νEC/EC – res, 1918KeV) > 4.1 x10^22 y was also obtained. All limits are at 90 % CL.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/EF16_013%2F0001733" target="_blank" >EF16_013/0001733: Underground laboratory LSM - Czech participation to European-level research</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics Conference Series
ISSN
1742-6588
e-ISSN
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Volume of the periodical
1342
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
1-5
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85079088333