Phys.Rev. C 101, 015504 (2020)

V.E.Iacob, J.C.Hardy, H.I.Park, M.Bencomo, L.Chen, V.Horvat, N.Nica, B.T.Roeder, A.Saastamoinen

New precise half-life measurement for the superallowed β⁺ emitter ³⁴Ar

RADIOACTIVITY ³⁴Ar(β⁺) [from ¹H(³⁵Cl, 2n), E=30 MeV/nucleon at the K500 superconducting cyclotron of Texas A and M University, followed by separation of fragments using the Momentum Achromat Recoil Spectrometer (MARS)]; measured Eβ, decay time spectrum, precise T_1/2 of ³⁴Ar decay using 4π proportional gas counter; deduced ft value for the superallowed β transition. Data analyzed as a linked parent-daughter pair. Discussed uncertainty budget. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.101.015504