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, A. Herlert, J. Kotila, M. Kowalska, S. Kreim, D., Lunney, S. Naimi, M. Rosenbusch, S. Schwarz, L. Schweikhard, F. Simkovic, J., Stanja, and K. Zuber
TL;DR
This paper reports a highly precise measurement of the double-beta decay Q-value for 110Pd, providing updated phase-space factors and matrix elements, and reevaluates its half-life, highlighting its potential for decay studies.
Contribution
The study presents a more accurate Q-value measurement for 110Pd and new phase-space factors and matrix elements, enhancing its suitability for double-beta decay research.
Findings
Q-value measured as 2017.85(64) keV, 17 times more precise
Reevaluated half-life of 1.5(6) x 10^20 years for two-neutrino decay
110Pd identified as an excellent candidate for decay studies
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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