Q-Value and Half-Lives for the Double-Beta-Decay Nuclide 110Pd

D. Fink , J. Barea , D. Beck , K. Blaum , Ch. B\"ohm , Ch. Borgmann , M. Breitenfeldt , F. Herfurth

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A. Herlert J. Kotila M. Kowalska S. Kreim D. Lunney S. Naimi M. Rosenbusch S. Schwarz L. Schweikhard F. Simkovic J. Stanja K. Zuber

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classification ⚛️ nucl-ex nucl-th

keywords decaydouble-betaq-valuetwo-neutrinovalueabundanceadditionbeen

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The 110Pd double-beta decay Q-value was measured with the Penning-trap mass spectrometer ISOLTRAP to be Q = 2017.85(64) keV. This value shifted by 14 keV compared to the literature value and is 17 times more precise, resulting in new phase-space factors for the two-neutrino and neutrinoless decay modes. In addition a new set of the relevant matrix elements has been calculated. The expected half-life of the two-neutrino mode was reevaluated as 1.5(6) E20 yr. With its high natural abundance, the new results reveal 110Pd to be an excellent candidate for double-beta decay studies.

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Q-Value and Half-Lives for the Double-Beta-Decay Nuclide 110Pd

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