მთავარი > Nuclear structure of $^{231}$Ac |
Article | |
Report number | arXiv:0808.0790 |
Title | Nuclear structure of $^{231}$Ac |
Author(s) | Boutami, R. (Madrid, Inst. Estructura Materia) ; Borge, M.J.G. (Madrid, Inst. Estructura Materia) ; Mach, H. (Uppsala U.) ; Kurcewicz, W. (Warsaw U.) ; Fraile, L.M. (Madrid U. ; CERN) ; Gulda, K. (Warsaw U.) ; Aas, A.J. (Oslo U.) ; Garcia-Raffi, L.M. (Valencia U., IFIC) ; Lovhoiden, G. (Oslo U.) ; Martinez, T. (Valencia U., IFIC) ; Rubio, B. (Valencia U., IFIC) ; Tain, J.L. (Valencia U., IFIC) ; Tengblad, O. (Madrid, Inst. Estructura Materia ; CERN) |
Publication | 2008 |
Imprint | 07 Aug 2008 |
Number of pages | 47 |
In: | Nucl. Phys. A 811 (2008) 244-275 |
DOI | 10.1016/j.nuclphysa.2008.08.005 |
Subject category | Nuclear Physics - Experiment |
Abstract | 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. |
Copyright/License | Elsevier B.V. |