Phys.Rev. C 109, L022501 (2024)

R.Bhandari, G.Bollen, T.Brunner, N.D.Gamage, A.Hamaker, Z.Hockenbery, M.Horana Gamage, D.K.Keblbeck, K.G.Leach, D.Puentes, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, I.Yandow

First direct ⁷Be electron-capture Q-value measurement toward high-precision searches for neutrino physics beyond the Standard Model

RADIOACTIVITY ⁷Be(EC); measured cyclotron frequency ratio of ⁷Be and ⁷Li; deduced Q-value for EC decay. Comparison to AME2020 data. Penning trap mass spectrometry (PTMS) performed using LEBIT Penning trap at the National Superconducting Cyclotron Laboratory/Facility for Rare Isotope Beams (NSCL/FRIB) with Batch-Mode Ion-Source (BMIS).

ATOMIC MASSES ⁷Be; measured cyclotron frequency; deduced mass excess.

doi: 10.1103/PhysRevC.109.L022501