High-Precision Half-life Measurement for the Superallowed Fermi β+ Emitter 22Mg
Abstract
A high-precision half-life measurement for the superallowed Fermi β+ emitter 22Mg was performed at the TRIUMF-ISAC facility using a 4π proportional gas counter. The result of T1/2 = 3.87400 0.00079 s is a factor of 3 more precise than the previously adopted world average and resolves a discrepancy between the two previously published 22Mg half-life measurements.
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