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.
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.nuclphysa.2008.08.005 |
| Přístupová URL adresa: |
http://arxiv.org/abs/0808.0790 |
| Přírůstkové číslo: |
edsarx.0808.0790 |
-->
| Autor: |
Boutami, R., Borge, M. J. G., Mach, H., Kurcewicz, W., Fraile, L. M., Gulda, K., Aas, A. J., García-Raffi, L. M., Løvhøiden, G., Martínez, T., Rubio, B., Taín, J. L., Tengblad, O. |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
Nucl.Phys.A811:244-275,2008 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.nuclphysa.2008.08.005 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
