2νββ decay of 100Mo to the first 0+ excited state in 100Ru

被引:0
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作者
Barabash, AS [1 ]
Gurriarán, R [1 ]
Hubert, F [1 ]
Hubert, P [1 ]
Umatov, VI [1 ]
机构
[1] Inst Theoret & Expt Phys, Moscow 117259, Russia
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中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
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 from measurements with different Mo-100 metal-powder samples and low-background 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.
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页码:2039 / 2043
页数:5
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