Nuclear structure of $^{231}$Ac

The low-energy structure of 231Ac has been investigated by means of gamma ray spectroscopy following the beta-decay of 231Ra. Multipolarities of 28 transitions have been established by measuring conversion electrons with a mini-orange electron spectrometer. The decay scheme of 231Ra --> 231Ac has...

Descripción completa

Detalles Bibliográficos
Autores principales: Boutami, R., Borge, M.J.G., Mach, H., Kurcewicz, W., Fraile, L.M., Gulda, K., Aas, A.J., Garcia-Raffi, L.M., Lovhoiden, G., Martinez, T., Rubio, B., Tain, J.L., Tengblad, O.
Lenguaje:eng
Publicado: 2008
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2008.08.005
http://cds.cern.ch/record/1119375
Descripción
Sumario:The low-energy structure of 231Ac has been investigated by means of gamma ray spectroscopy following the beta-decay of 231Ra. Multipolarities of 28 transitions have been established by measuring conversion electrons with a mini-orange electron spectrometer. The decay scheme of 231Ra --> 231Ac has been constructed for the first time. The Advanced Time Delayed beta-gamma-gamma(t) method has been used to measure the half-lives of five levels. The moderately fast B(E1) transition rates derived suggest that the octupole effects, albeit weak, are still present in this exotic nucleus.

Ejemplares similares