2 nu beta beta decay of Mo-100 to the first 0(+) excited state in Ru-100

Authors
Barabash, AS Gurriaran, R Hubert, F Hubert, P Umatov, VI
Citation
As. Barabash et al., 2 nu beta beta decay of Mo-100 to the first 0(+) excited state in Ru-100, PHYS ATOM N, 62(12), 1999, pp. 2039-2043
Citations number
27
Categorie Soggetti
Physics
Journal title
PHYSICS OF ATOMIC NUCLEI
ISSN journal
10637788 → ACNP
Volume
62
Issue
12
Year of publication
1999
Pages
2039 - 2043
Database
ISI
SICI code
1063-7788(199912)62:12<2039:2NBBDO>2.0.ZU;2-Z
Abstract
Two-neutrino double-beta decay of Mo-100 to the first 0(+) excited state in Ru-100 has been detected with a half-life of 9.3(-1.7)(+2.8) x 10(20) yr. Two peaks at 539.53 and 590.76 keV were observed for summing up spectra fro m measurements with different Mo-100 metal-powder samples and low-backgroun d germanium detectors, Combining the new data with the Soudan experimental data, the decay half-life is estimated as 7.6(-1.1)(+1.6) x 10(20) yr with a 15% systematic error.