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arXiv · 1112.5786

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

D. Fink·J. Barea·D. Beck·K. Blaum·Ch. Böhm·Ch. Borgmann·M. Breitenfeldt·F. Herfurth·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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Abstract

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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D. Fink, J. Barea, D. Beck, K. Blaum, Ch. Böhm, Ch. Borgmann, M. Breitenfeldt, F. Herfurth, A. Herlert, J. Kotila, M. Kowalska, S. Kreim, D. Lunney, S. Naimi, M. Rosenbusch, S. Schwarz, L. Schweikhard, F. Simkovic, J. Stanja, K. Zuber. 2011-12-25. Q-Value and Half-Lives for the Double-Beta-Decay Nuclide 110Pd. https://doi.org/10.1103/physrevlett.108.062502

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