Electron capture decay of 58-minU92229and levels inPa91229
| Autor: | F. G. Kondev, John P. Greene, S. Zhu, R. R. Chasman, I. Ahmad |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Physical Review C. 92 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.92.024313 |
| Popis: | Electron capture decay of $^{229}\mathrm{U}$ is investigated by measuring the $\ensuremath{\gamma}$-ray and conversion electron spectra of mass-separated and unseparated $^{229}\mathrm{U}$ sources with high-resolution germanium and silicon detectors, respectively. Gamma-gamma coincidence measurements are also performed using germanium detectors. These studies provide level energies and level ordering in $^{229}\mathrm{Pa}$. Single-particle assignments are given to these levels which are in agreement with the systematics in this region and also with theory. In a previous study, we report the observation of a 5/${2}^{\ifmmode\pm\else\textpm\fi{}}$ parity doublet in the $^{229}\mathrm{Pa}$ ground state, which is a signature of octupole deformation. The present analysis of the data still shows a splitting of $60\ifmmode\pm\else\textpm\fi{}50$ eV, but with this large uncertainty the existence of the doublet is not certain. |
| Databáze: | OpenAIRE |
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