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arXiv · 1805.05800

Measurement of the $^{20}$F half-life

M. Hughes·E. A. George·O. Naviliat-Cuncic·P. A. Voytas·S. Chandavar·A. Gade·X. Huyan·S. N. Liddick·K. Minamisono·S. V. Paulauskas·D. Weisshaar
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Abstract

The half-life of the $^{20}$F ground state has been measured using a radioactive beam implanted in a plastic scintillator and recording $βγ$ coincidences together with four CsI(Na) detectors. The result, $T_{1/2} = 11.0011(69)_{\rm stat}(30)_{\rm sys}$~s, is at variance by 17 combined standard deviations with the two most precise results. The present value revives the poor consistency of results for this half-life and calls for a new measurement, with a technique having different sources of systematic effects, to clarify the discrepancy.

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M. Hughes, E. A. George, O. Naviliat-Cuncic, P. A. Voytas, S. Chandavar, A. Gade, X. Huyan, S. N. Liddick, K. Minamisono, S. V. Paulauskas, D. Weisshaar. 2018-05-15. Measurement of the $^{20}$F half-life. https://doi.org/10.1103/physrevc.97.054328

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