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Title

Total absorption spectroscopy study of the β decay of Br 86 and Rb 91

AuthorsRice, S.; Algora, Alejandro ; Taín, José Luis ; Valencia, Ebhelixes ; Agramunt, Jorge ; Rubio, Berta ; Gelletly, W.; Caballero-Folch, R.; Estevez, E.; García, A. R.; Gómez-Hornillos, B.; Gorlychev, V.; Jordán, M. D.; Martínez, T.; Mendoza, E.; Sarriguren, Pedro
Issue Date27-Jul-2017
PublisherAmerican Physical Society
CitationPhysical Review C 96: 014320 (2017)
AbstractThe beta decays of Br86 and Rb91 have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the Ion Guide Isotope Separator On-Line facility in Jyväskylä and further purified using the JYFLTRAP. Br86 and Rb91 are considered to be major contributors to the decay heat in reactors. In addition, Rb91 was used as a normalization point in direct measurements of mean gamma energies released in the beta decay of fission products by Rudstam et al. assuming that this decay was well known from high-resolution measurements. Our results show that both decays were suffering from the Pandemonium effect and that the results of Rudstam et al. should be renormalized. The relative impact of the studied decays in the prediction of the decay heat and antineutrino spectrum from reactors has been evaluated.
DescriptionS. Rice et al. -- 10 pags., 12 figs., 4 tabs.
Publisher version (URL)https://doi.org/10.1103/PhysRevC.96.014320
URIhttp://hdl.handle.net/10261/162883
Identifiersdoi: 10.1103/PhysRevC.96.014320
issn: 2469-9993
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