Speaker
Description
Decay Q-values are necessary to calculate the phase-space factors which determine the decay rates of double beta and double electron-capture decays. Precision measurements of the masses of these isotopes unambiguously determine their Q-values, and this work discusses the result of a Penning trap mass measurement obtained for a double electron-capture candidate using the Phase-Imaging Ion-Cyclotron-Resonance technique at JYFLTRAP in Jyväskylä, Finland. The double Penning trap system allows ions to execute multiple rounds of mass selective cooling in the gas-filled preparation trap to purify the ion bunch and select for the ions of interest. Using this trap, we report the measurement of a significant departure in the mass from the value listed in the 2020 Atomic Mass Evaluation and discuss how this impacts the Q-value and resulting predictions of the decay half-life.
