High precision measurement of the $^{19}\mathrm{Ne}\phantom{\rule{4pt}{0ex}}\ensuremath{\beta}$-decay half-life using real-time digital acquisition

High precision measurement of the ${}^{19}{Ne} β$ -decay half-life using real-time digital acquisition

C. Fontbonne et al.

Phys. Rev. C 96, 065501 – Published 11 December 2017

Abstract

The half-life of ${}^{19}{Ne}$ was measured using a real-time digital multiparametric acquisition system, providing an accurate time stamp and relevant information on the detector signals for each decay event. An exhaustive offline analysis of the data gave unique access to experimental effects potentially biasing the measurement. After establishing the influence factors impacting the measurement such as after-pulses, pile-up, gain, and baseline fluctuations, their effects were accurately estimated and the event selection optimized. The resulting half-life, $17.2569 \pm 0 . 0019_{(stat)} \pm 0 . 0009_{(syst)}$ s, is the most precise up to now for ${}^{19}{Ne}$ . It is found to be in agreement with two recent precise measurements and not consistent with the most recent one [L. J. Broussard et al., Phys. Rev. Lett. 112, 212301 (2014)] by 3.0 standard deviations. The full potential of the technique for nuclei with half-lives of a few seconds is discussed.