New high-spin structure and possible chirality in In-109

作者：Wang, M.; Wang, Y. Y.; Zhu, L. H.^*; Sun, B. H.^*; Zhang, G. L.; He, L. C.; Qu, W. W.; Wang, F.; Wang, T. F.; Chen, Y. Y.; Xiong, C.; Zhang, J.; Zhang, J. M.; Zheng, Y.; He, C. Y.; Li, G. S.; Wang, J. L.; Wu, X. G.; Yao, S. H.; Li, C. B.; Li, H. W.; Hu, S. P.; Liu, J. J.

来源：PHYSICAL REVIEW C, 2018, 98(1): 014304.

DOI：10.1103/PhysRevC.98.014304

• HARTREE-BOGOLIUBOV THEORY
• MAGNETIC ROTATION
• PSEUDOSPIN SYMMETRY
• NUCLEAR-STRUCTURE
• GIANT-RESONANCES
• SN ISOTOPES
• R-PROCESS
• SPECTROSCOPY
• MODELS
• DECAY

The high-spin structure of In-109 has been investigated with the Mo-100(N-14, 5n)(109) In reaction at a beam energy of 78 MeV using the in-beam gamma spectroscopic method. The level scheme of In-109 has been modified considerably and extended by 46 new gamma rays to the highest excited state at 8.980 MeV and J(pi) = (45/2(+)). The new level scheme consists of eight bands, six of which are identified as dipole bands. The configurations have been tentatively assigned with the help of the systematics of neighboring odd-A indium isotopes and the experimental aligned angular momenta. The dipole bands are then compared with the titled axis cranking calculation in the framework of covariant density function theory. The results of theoretical calculations based on the configurations, which involve one proton hole at the g(9/2) orbital and two or four unpaired neutrons at the g(7/2), d(5/)(2), and h(1)(1/)(2) orbitals, show that the shape of In-109 undergoes an evolution on both beta and gamma deformations, and possible chirality is suggested in In-109.

• 出版日期2018-7-5
• 单位苏州大学; 中国原子能科学研究院; 吉林大学; 北京航空航天大学; 深圳大学