Structure of high spin states in104Sn:E2andE3polarization of the100Sncore
| Autor: | M. Rejmund, A. Dewald, B. A. Brown, M. De Poli, P. G. Bizzeti, Claes Fahlander, H. Grawe, H. Tiesler, A. Gadea, D. R. Napoli, K. P. Lieb, R. Peusquens, G. de Angelis, M. Górska, Q. Pan, D. Kast, K. H. Maier, A. Jungclaus |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Physical Review C. 58:108-115 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.58.108 |
| Popis: | High spin states in ${}^{104}\mathrm{Sn}$ were identified in the reaction ${}^{58}\mathrm{Ni}{(}^{50}\mathrm{Cr}$, $2p2n)$ at 200 and 205 MeV beam energies. The $\ensuremath{\gamma}$-ray energies, intensities, multipolarities, and lifetimes of high spin states were measured with the GASP spectrometer array in combination with a plunger apparatus by means of the recoil distance Doppler shift method. The deduced level scheme and transition probabilities are compared to the results of large-scale shell model calculations using three independent two-body interactions. The agreement of the level energies is satisfactory, except for a cascade of dipole transitions at high spins. The general good agreement found for $E2$ transition strengths implies a large effective neutron polarization charge. The shell-model calculations do not account for the measured enhanced $E3$ transitions for which a core excited octupole phonon admixture is indicated. |
| Databáze: | OpenAIRE |
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