Multiphonon gamma-vibrational bands in the gamma-soft nucleus Nd-138

作者：Li, H. J.; Xiao, Z. G.^*; Zhu, S. J.; Yeoh, E. Y.; Liu, Y. X.; Sun, Y.; Zhang, Z.; Wang, R. S.; Yi, H.; Yan, W. H.; Xu, Q.; Wu, X. G.; He, C. Y.; Zheng, Y.; Li, G. S.; Li, C. B.; Li, H. W.; Liu, J. J.; Hu, S. P.; Wang, J. L.; Yao, S. H.

来源：Physical Review C, 2013, 87(5): 057303.

DOI：10.1103/PhysRevC.87.057303

• HIGH-SPIN STATES
• NONYRAST STATES
• DECAY
• REGION
• CE

The low spin states of Nd-138 have been reinvestigated via the Te-124(F-19, 4n1p) reaction at a beam energy of 103 MeV. The quasi-one-phonon gamma-vibrational band based on the 1013.7 keV level has been expanded and the quasi-two-phonon gamma-vibrational band built on the 1842.7 keV level has been proposed. A systematic comparison supports our assignments for multiphonon gamma-vibrational bands in Nd-138. The characteristics of gamma softness in Nd-138 have been discussed. Triaxial projected shell model calculations can well describe the rotational feature of the bands, but they fail to reproduce simultaneously the bandhead energies of the two gamma-vibrational bands if a fixed triaxial deformation is assumed.

• 出版日期2013-5-10
• 单位湖州师范学院; 上海交通大学; 清华大学; 中国原子能科学研究院; 中国科学院近代物理研究所