Structure of the Semi-decoupled π 1/2[411] Band in Odd Proton Nucleus 169Ta
SONG Hai1,5, YANG Chun-Xiang1,2,4, SUN Hui-Bin3, DENG Fu-Guo1,5, WU Xiao-Guang2, LU Jing-Bin4, ZHAO Guang-Yi4, HAN Guang-Bing2, PENG Chao-Hua2, YIN Li-Chang4, WEN Shu-Xian2, LI Guang-Sheng2, YUAN Guan-Jun2, LIU Yun-Zuo4, ZHU Li-Hua2, SHAO Li-Qin1,5, ZHOU Hong-Yu1,5
1The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, Beijing Normal University, Beijing 100875
2China Institute of Atomic Energy, Beijing 102413
3Institute of Nuclear Technique, Shenzhen University, Shenzhen 518060
4Department of Physics, Jilin University, Changchun 130023
5Beijing Radiation Center, Beijing 100875
Structure of the Semi-decoupled π 1/2[411] Band in Odd Proton Nucleus 169Ta
1The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, Beijing Normal University, Beijing 100875
2China Institute of Atomic Energy, Beijing 102413
3Institute of Nuclear Technique, Shenzhen University, Shenzhen 518060
4Department of Physics, Jilin University, Changchun 130023
5Beijing Radiation Center, Beijing 100875
Abstract： High spin states of the odd proton-nucleus 169Ta have been populated in the reaction 155Gd(19F, 5n) with beam energies of 97 MeV. Rotational band based on d3/2 proton 1/2[411] Nilsson state has been pushed up to 39/2+ in the α = 1/2 decay sequence. Its signature partner, the α = -1/2 decay sequence with four link transitions has been established and 1/2[411] band in 169Ta was reassigned to be a semi-decoupled band. The systematics of the signature splitting in the K = 1/2 bands in the rear-earth region and the accidental degeneracy conclusion given by the angular projection shell model were discussed.
MA Long;ZHOU Xiao-Hong;XING Ye-Bing;ZHANG Yu-Hu;GUO Ying-Xing;LEI Xiang-Guo;XIE Chen-Ying;Oshima M.;Toh Y.;Koizumi M.;Osa A.;Hatsukawa Y.;Sugawara M.. Properties of the πh9/2 otimes νi13/2 Oblate Band in 188Tl[J]. 中国物理快报, 2006, 23(7): 1727-1730.
2003, Vol. 20 
