Identification of a New Band and Its Signature Inversion in 174Re
ZHANG Yu-Hu1, GUO Song 1,2, ZHOU Xiao-Hong 1, MA Long 1, GUO Wen-Tao1, Oshima M.3, Toh Y.3, Koizumi M.3, Osa A.3, Kimura A.3, Hatsukawa Y.3, Sugawara M.4, Kusakari H.5
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002Graduate School of Chinese Academy of Sciences, Bejing 1000393Japan Atomic Energy Agency, Tokai-Mura, Ibaraki 319-1195, Japan4Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan5Chiba University, Inage-ku, Chiba 263-8512, Japan
Identification of a New Band and Its Signature Inversion in 174Re
ZHANG Yu-Hu1;GUO Song 1,2;ZHOU Xiao-Hong 1;MA Long 1;GUO Wen-Tao1, Oshima M.3;Toh Y.3;Koizumi M.3;Osa A.3;Kimura A.3;Hatsukawa Y.3;Sugawara M.4;Kusakari H.5
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002Graduate School of Chinese Academy of Sciences, Bejing 1000393Japan Atomic Energy Agency, Tokai-Mura, Ibaraki 319-1195, Japan4Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan5Chiba University, Inage-ku, Chiba 263-8512, Japan
摘要High spin states in 174Re are investigated via the 152Sm(27Al,5nγ)174Re reaction and γ-γ coincidence relationships are analysed carefully. A new band is identified due to its spectroscopic connection with the known π1/2-[541]⊕ν1/2-[521] band. This band is proposed to be the ground-state band built on the π 1/2- [541]⊕ν5/2- [512] configuration in view of the low-lying intrinsic states in the neighbouring odd-mass nuclei. It is of particular interesting that the new band exhibits a phenomenon of low-spin signature inversion, providing a new situation for theoretical investigations.
Abstract：High spin states in 174Re are investigated via the 152Sm(27Al,5nγ)174Re reaction and γ-γ coincidence relationships are analysed carefully. A new band is identified due to its spectroscopic connection with the known π1/2-[541]⊕ν1/2-[521] band. This band is proposed to be the ground-state band built on the π 1/2- [541]⊕ν5/2- [512] configuration in view of the low-lying intrinsic states in the neighbouring odd-mass nuclei. It is of particular interesting that the new band exhibits a phenomenon of low-spin signature inversion, providing a new situation for theoretical investigations.
ZHANG Yu-Hu;GUO Song;ZHOU Xiao-Hong;MA Long;GUO Wen-Tao;Oshima M.;Toh Y.;Koizumi M.;Osa A.;Kimura A.;Hatsukawa Y.;Sugawara M.;Kusakari H.. Identification of a New Band and Its Signature Inversion in 174Re[J]. 中国物理快报, 2007, 24(5): 1203-1206.
ZHANG Yu-Hu, GUO Song, ZHOU Xiao-Hong, MA Long, GUO Wen-Tao, Oshima M., Toh Y., Koizumi M., Osa A., Kimura A., Hatsukawa Y., Sugawara M., Kusakari H.. Identification of a New Band and Its Signature Inversion in 174Re. Chin. Phys. Lett., 2007, 24(5): 1203-1206.
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2007, Vol. 24 
