High precision measurement of the $^{19}$Ne $\beta$-decay half-life using real-time digital acquisition
Langue
en
Article de revue
Ce document a été publié dans
Phys.Rev.C. 2017, vol. 96, n° 6, p. 065501
Résumé en anglais
The half-life of Ne19 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 ...Lire la suite >
The half-life of Ne19 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±0.0019(stat)±0.0009(syst) s, is the most precise up to now for Ne19. It is found to be in agreement with two recent precise measurements and not consistent with the most recent one [L. J. Broussard , Phys. Rev. Lett. 112, 212301 (2014)PRLTAO0031-900710.1103/PhysRevLett.112.212301] by 3.0 standard deviations. The full potential of the technique for nuclei with half-lives of a few seconds is discussed.< Réduire
Mots clés en anglais
24.80.+y
23.40.-s
12.15.Hh
12.60.-i
Origine
Importé de halUnités de recherche