| Autor: |
He, Chuangye, Shen, Shuifa, Wen, Shuxian, Zhu, Lihua, Wu, Xiaoguang, Li, Guangsheng, Zhao, Yue, Yan, Yupeng, Bai, Zhijun, Wu, Yican, Li, Yazhou, Li, Gui, Yan, Shiwei, Oshima, M., Toh, Y., Osa, A., Koizumi, M., Hatsukawa, Y., Matsuda, M., Hagakawa, T. |
| Rok vydání: |
2012 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevC.87.034320 |
| Popis: |
High spin states of 80Rb are studied via the fusion-evaporation reactions 65Cu+19F, 66Zn+18O and 68Zn+16O with the beam energies of 75 MeV, 76 MeV and 80 MeV, respectively. Twenty-three new states with twenty-eight new \gamma transitions were added to the previously proposed level scheme, where the second negative-parity band is significantly pushed up to spins of 22^{-} and 15^{-} and two new sidebands are built on the known first negative-parity band. Two successive band crossings with frequencies 0.51 MeV and 0.61 MeV in the \alpha=0 branch as well as another one in the \alpha=1 branch of the second negative-parity band are observed for the first time. Signature inversions occur in the positive- and first negative-parity bands at the spins of 11\hbar and 15\hbar, respectively. The signature splitting is seen obviously in the second negative-parity band, but the signature inversion is not observed. It is also found that the structure of the two negative-parity bands is similar to that of its isotone ^{82}Y. Signature inversion in the positive-parity yrast band with configuration \pi g_{9/2} \otimes \nu g_{9/2} in this nucleus is discussed using the projected shell model (PSM). |
| Databáze: |
arXiv |
| Externí odkaz: |
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