• D. A. Nesterenko
  • L. Canete
  • T. Eronen
  • A. Jokinen
  • A. Kankainen
  • Yu N. Novikov
  • S. Rinta-Antila
  • A. de Roubin
  • M. Vilen

The Q-value for the neutrinoless double electron capture on 102Pd, Qϵϵ(102Pd), is determined as the atomic mass difference between 102Pd and 102Ru. A precise measurement of the Qϵϵ(102Pd) at the SHIPTRAP Penning trap showed a more than 10σ deviation to the adopted Atomic Mass Evaluation (AME) value. The reliability of the SHIPTRAP measurement was challenged because the AME value was based on numerous experiments including β and electron capture decays and very precise (n, γ) data, all agreeing with each other. To solve the discrepancy, the Qϵϵ(102Pd) has now been determined with the JYFLTRAP Penning trap at the IGISOL facility in the Accelerator Laboratory of the University of Jyväskylä. The measurement was performed both with the Time-of-Flight and the Phase-Imaging Ion Cyclotron Resonance techniques. The obtained result, Qϵϵ(102Pd) = 1203.472(45) keV, is eight times more precise and agrees well with the value obtained at SHIPTRAP, Qϵϵ(102Pd) = 1203.27(36) keV, confirming that 102Pd is not a good candidate for a search for neutrinoless double-electron capture.

Original languageEnglish
Pages (from-to)204-208
Number of pages5
JournalInternational Journal of Mass Spectrometry
Volume435
DOIs
StatePublished - 1 Jan 2019

    Research areas

  • High-precision mass spectrometry, Neutrinoless double-electron capture, Penning trap, Q-values, EVALUATION (I). EVALUATION, INPUT DATA, PENNING TRAPS, SPECTROMETRY, RAMSEY METHOD

    Scopus subject areas

  • Condensed Matter Physics
  • Instrumentation
  • Spectroscopy
  • Physical and Theoretical Chemistry

ID: 46099255