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Investigation of double beta decay of 100Mo to excited states of 100Ru

Abstract : Double beta decay of 100Mo to the excited states of daughter nuclei has been studied using a 600 cm3 low-background HPGe detector and an external source consisting of 2588 g of 97.5% enriched metallic 100Mo, which was formerly inside the NEMO-3 detector and used for the NEMO-3 measurements of 100Mo. The half-life for the two-neutrino double beta decay of 100Mo to the excited View the MathML source01+ state in 100Ru is measured to be T1/2=[7.5±0.6(stat)±0.6(syst)]⋅1020 yrT1/2=[7.5±0.6(stat)±0.6(syst)]⋅1020 yr. For other (0ν+2ν)(0ν+2ν) transitions to the View the MathML source21+, View the MathML source22+, View the MathML source02+, View the MathML source23+ and View the MathML source03+ levels in 100Ru, limits are obtained at the level of ∼(0.25-1.1)⋅1022 yr∼(0.25-1.1)⋅1022 yr.
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Submitted on : Friday, October 3, 2014 - 10:59:34 AM
Last modification on : Wednesday, September 16, 2020 - 4:27:31 PM

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R. Arnold, C. Augier, A.S. Barabash, A. Basharina-Freshville, S. Blondel, et al.. Investigation of double beta decay of 100Mo to excited states of 100Ru. Nuclear Physics A, Elsevier, 2014, 925, pp.25-36. ⟨10.1016/j.nuclphysa.2014.01.008⟩. ⟨in2p3-00951921⟩

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