Total absorption spectroscopy study of the β decay of Br86 and Rb91

Rice, S.; Algora, A.; Tain, J. L.; Valencia, E.; Agramunt, J.; Rubio, B.; Gelletly, W.; Regan, P. H.; Zakari-Issoufou, A. -A.; Fallot, M.; Porta, A.; Rissanen, J.; Eronen, T.; Äystö, J.; Batist, L.; Bowry, M.; Bui, V. M.; Caballero-Folch, R.; Cano-Ott, D.; Elomaa, V. -V.; Estevez, E.; Farrelly, G. F.; Garcia, A. R.; Gomez-Hornillos, B.; Gorlychev, V.; Hakala, J.; Jordan, M. D.; Jokinen, A.; Kolhinen, V. S.; Kondev, F. G.; Martínez, T.; Mason, P.; Mendoza, E.; Moore, I.; Penttilä, H.; Podolyák, Zs.; Reponen, M.; Sonnenschein, V.; Sonzogni, A. A.; Sarriguren, P.

doi:10.1103/PhysRevC.96.014320

Title: Total absorption spectroscopy study of the $β$ decay of ${}^{86}{Br}$ and ${}^{91}{Rb}$

Journal Article · Sat Jul 01 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.014320· OSTI ID:1376708

Rice, S.; Algora, A.; Tain, J. L.; Valencia, E.; Agramunt, J.; Rubio, B.; Gelletly, W.; Regan, P. H.; Zakari-Issoufou, A. -A.; Fallot, M.; Porta, A.; Rissanen, J.; Eronen, T.; Äystö, J.; Batist, L.; Bowry, M.; Bui, V. M.; Caballero-Folch, R.; Cano-Ott, D.; Elomaa, V. -V. more »

The beta decays of Br-86 and Rb-91 have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the Ion Guide Isotope Separator On-Line facility in Jyvaskyla and further purified using the JYFLTRAP. Br-86 and Rb-91 are considered to be major contributors to the decay heat in reactors. In addition, Rb-91 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 decaywas 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.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science - Office of Nuclear Physics; Spanish Ministerio de Economia y Competitividad (MINECO); Engineering and Physical Sciences Research Council (EPSRC); STFC Daresbury Laboratory

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1376708

Journal Information:: Physical Review C, Vol. 96, Issue 1; ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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