Electromagnetic Transition Strengths and New Insight into the Chirality in 106Ag
ZHENG Yun1, ZHU Li-Hua2,3**, WU Xiao-Guang1**, HE Chuang-Ye1, LI Guang-Sheng1, HAO Xin1,3, YU Bei-Bei1, YAO Shun-He1, ZHANG Biao1, XU Chuan4, WANG Jian-Guo5, GU Long5
1China Institute of Atomic Energy, Beijing 102413 2School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 3Faculty of Science, Shenzhen University, Shenzhen 518060 4School of Physics, Peking University, Beijing 100871 5Department of Physics, Tsinghua University, Beijing 100084
Excited states in 106Ag are populated through the heavy-ion fusion evaporation reaction 100Mo(11B,5n)106Ag at a beam energy of 60 MeV. Lifetimes are measured for transitions of the two negative-parity rotational bands in the nucleus 106Ag. The reduced transition probabilities show a great difference between the two bands. The staggering of the B(M1) and B(M1)/B(E2) values with spin are not observed. The bands are identified to be built on two distinct quasiparticle configurations. These results are contrary to an earlier suggestion that the pair of bands in 106Ag are chiral doublet bands.
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WANG Lie-Lin, LU Jing-Bin, YANG Dong, MA Ke-Yan, ZHOU Yin-Hang, YIN Li-Chang, WU Xiao-Guang, WEN Shu-Xian, LI Guang-Sheng, YANG Chun-Xiang. High-Spin Structure in Odd-Odd 160Lu Nucleus[J]. 中国物理快报, 2012, 29(6): 62103-062103.