High-spin states in (156)Yb and structure evolutions at large angular momenta in even-A Yb isotopes
- Li, Z. Y.
- Hua, H.
- Wang, S. Y.
- Meng, J.
- Li, Z. H.
- Li, X. Q.
- Xu, F. R.
- Liu, H. L.
- Zhang, S. Q.
- Ye, Y. L.
- Jiang, D. X.
- Zheng, T.
- Ma, L. Y.
- Lu, F.
- Fan, F. Y.
- Han, L. Y.
- Wang, H.
- Xiao, J.
- Chen, D.
- Fang, X.
- Lou, J. L.
- Zhou, S. G.
- Zhu, L. H.
- Wu, X. G.
- Li, G. S.
- He, C. Y.
- Liu, Y.
- Li, X. Q.
- Hao, X.
- Pan, B.
- Li, L. H.
DOIAbstract
High-spin states of (156)Yb have been studied via the (144)Sm((16)O,4n)(156)Yb fusion-evaporation reaction at beam energy 102 MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. In the present work, the negative-parity sequence above the 25(-) state was found to be irregular and fragment into many parallel branches. This pattern may related to the excitation from the nucleon in the Z=64,N=82 core. The characteristics of alignment plot and E-GOS curve for the positive-parity yrast sequence in (156)Yb indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. Based on a systematic summary of the ...
Add to ORKG