Phys.Rev. C 102, 054325 (2020)

A.D.MacLean, A.T.Laffoley, C.E.Svensson, G.C.Ball, J.R.Leslie, C.Andreoiu, A.Babu, S.S.Bhattacharjee, H.Bidaman, V.Bildstein, C.Burbadge, M.Bowry, C.Cheng, D.S.Cross, A.Diaz Varela, I.Dillmann, M.R.Dunlop, R.Dunlop, L.J.Evitts, P.Finlay, S.Gillespie, A.B.Garnsworthy, P.E.Garrett, E.Gopaul, C.J.Griffin, G.F.Grinyer, G.Hackman, J.Henderson, B.Jigmeddorj, K.G.Leach, E.Kassanda, J.McAfee, M.Moukaddam, C.Natzke, S.Nittala, B.Olaizola, J.Park, C.Paxman, J.L.Pore, C.Porzio, A.J.Radich, P.Ruotsalainen, Y.Saito, S.Sharma, J.Smallcombe, J.K.Smith, R.Sultana, J.Turko, J.Williams, D.Yates, T.Zidar

High-precision branching ratio measurement and spin assignment implications for ⁶²Ga superallowed β decay

RADIOACTIVITY ⁶²Ga(β⁺), (EC); measured Eγ, Iγ, β⁺, β⁺γ- and βγγ-coin, γγ(θ) using GRIFFIN array of 16 Compton-suppressed HPGe clover detectors for γ rays, and SCEPTAR array of plastic scintillators for β particles at TRIUMF-ISAC facility. ⁶²Zn; deduced levels, J, π, multipole mixing ratios, precise β branch for superallowed 0⁺ to 0⁺ transition, β feedings to excited 0⁺ and (1+) states, isospin-symmetry-breaking correction. Comparison with previous experimental results and implications for theoretical studies of isospin-symmetry-breaking correction calculations.

doi: 10.1103/PhysRevC.102.054325