Half-life determination of short-lived nuclear levels in 237 Np (59.54 keV), 233 Pa (86.47 keV) and 227 Ac (27.37 keV).

Autor: Takács MP; Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany. Electronic address: marcell.takacs@ptb.de., Kossert K; Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany.
Jazyk: angličtina
Zdroj: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2021 Oct; Vol. 176, pp. 109858. Date of Electronic Publication: 2021 Jul 08.
DOI: 10.1016/j.apradiso.2021.109858
Abstrakt: New half-life values for isomeric states in 237 Np, 233 Pa and 227 Ac were measured by means of 4πα(LS)-γ coincidence counting with digital data acquisition. A careful assessment of uncertainties was carried out, and the new results are found to be much more precise than any previous measurement result. The half-lives were found to be T 1/2 Np237,E=59.54keV=67.86±0.09ns, T 1/2 Pa233,E=86.47keV=36.44±0.10ns and T 1/2 Ac227,E=27.37keV=38.56±0.15ns, respectively. A comprehensive study of literature data was undertaken for a new data evaluation that includes the results from this work.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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