Beta decay of the axially asymmetric ground state of Re

非軸対称に変形したReのベータ崩壊

渡邉 寛*; 渡辺 裕*; 平山 賀一*; Andreyev, A. N.; 橋本 尚志*; Kondev, F. G.*; Lane, G. J.*; Litvinov, Yu. A.*; Liu, J. J.*; 宮武 宇也*; Moon, J. Y.*; Morales, A. I.*; 向井 もも*; 西村 俊二*; 庭瀬 暁隆*; Rosenbusch, M.*; Schury, P.*; Shi, Y.*; 和田 道治*; Walker, P. M.*

Watanabe, Hiroshi*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Andreyev, A. N.; Hashimoto, Takashi*; Kondev, F. G.*; Lane, G. J.*; Litvinov, Yu. A.*; Liu, J. J.*; Miyatake, Hiroari*; Moon, J. Y.*; Morales, A. I.*; Mukai, Momo*; Nishimura, Shunji*; Niwase, Toshitaka*; Rosenbusch, M.*; Schury, P.*; Shi, Y.*; Wada, Michiharu*; Walker, P. M.*

The decay of Re, which lies near the boundary between the regions of predicted prolate and oblate deformations, has been investigated using the KEK Isotope Separation System (KISS) in RIKEN Nishina Center. The ground state of Re has been assigned = based on the observed feedings and deduced log values towards the and states in Os, which is known as a typical -soft nucleus. The shape transition from axial symmetry to axial asymmetry in the Re isotopes is discussed from the viewpoint of single-particle structure using the nuclear Skyrme-Hartree-Fock model.