The half-life of the 20F 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, T1/2=11.0011(69)stat(30)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.
@article{arxiv.1805.05800,
title = {Measurement of the $^{20}$F half-life},
author = {M. Hughes and E. A. George and O. Naviliat-Cuncic and P. A. Voytas and S. Chandavar and A. Gade and X. Huyan and S. N. Liddick and K. Minamisono and S. V. Paulauskas and D. Weisshaar},
journal= {arXiv preprint arXiv:1805.05800},
year = {2018}
}
Comments
11 pages, 13 figures, accepted for publication in Phys. Rev. C