| Autor: |
Weber, T., de Boer, J., Freitag, K., Gröger, J., Günther, C., Herzog, P., Soloviev, V.G., Sushkov, A.V., Shirikova, N.Yu. |
| Zdroj: |
European Physical Journal A -- Hadrons & Nuclei; Sep1998, Vol. 3 Issue 1, p25-48, 24p |
| Abstrakt: |
The electron-capture decay of 228Pa to levels in 228Th was studied using mass-separated sources and a γ-ray detection system consisting of five Compton-suppressed Ge detectors. A total of 87 levels were observed up to an excitation energy of 2 MeV which are connected by approximately 500 γ-ray transitions. The complete octupole quadruplet, three excited Kπ=0+ bands and two Kπ=2+ bands were identified below 1.4 MeV. The observed level structure is compared to calculations within the quasiparticle-phonon nuclear model. The surprisingly good agreement indicates that 228Th has less transitional character than hitherto assumed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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