6533b872fe1ef96bd12d2ce9

RESEARCH PRODUCT

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

P. J. R. MasonM. ReponenD. Cano-ouE. MendozaJani HakalaTommi EronenV. GorlychevJuho RissanenBerta RubioL. BatistE. ValenciaB. Gomez-hornillosW. GelletlyAri JokinenVolker SonnenscheinV.-v. ElomaaT. MartinezR. Caballero-folchPedro SarrigurenAmanda PortaIain MooreMuriel FallotF. G. KondevE. EstevezVeli KolhinenM. BowryA.-a. Zakari-issoufouG. F. FarrellyZs. PodolyákA. A. SonzogniM. D. JordanHeikki PenttiläAlejandro AlgoraJorge AgramuntJ. L. TainJuha ÄYstöP. H. ReganStephen RiceV. M. BuiA. R. García

subject

PhysicsFission productsDecay schemeTotal absorption spectroscopy010308 nuclear & particles physicsPandemonium effect01 natural sciencesBeta decayIonizing radiationNuclear physics0103 physical sciencesBeta particleDecay heatNuclear Experiment010306 general physics

description

The beta decays of 86Br and 91Rb have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the IGISOL facility in Jyvaskyla and further purified using the JYFLTRAP. 86Br and 91Rb are considered high priority contributors to the decay heat in reactors. In addition 91Rb 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 shows that both decays were suffering from the Pandemonium effect and that the results of Rudstam et al. should be renormalized.

https://doi.org/10.1103/physrevc.96.014320