JIANG Zhuo1, ZHU Sheng-Jiang1, J. H. Hamilton2, A. V. Ramayya2, J. K. Hwang2, ZHANG Zheng1, XU Rui-Qing1, XIAO Shu-Dong1, CHE Xing-Lai1, YU Yong-Nan1, W. C. Ma3, J. D. Cole4, M. W. Drigert4, I. Y. Lee5, J. O.Rasmussen5, Y. X. Luo2,5
1Department of Physics, Tsinghua University, Beijing 100084
2Department of Physics, Vanderbilt University, Nashville, Tennessee 37235, USA
3Department of Physics, Mississippi State University, Mississippi 39762, USA
4Idaho National Engineering and Environmental Laboratory, Idaho Fall, Idaho 83415-2114, USA
5Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
Collective Bands in Neutron-Rich 110Ru Nucleus
JIANG Zhuo1;ZHU Sheng-Jiang1;J. H. Hamilton2;A. V. Ramayya2;J. K. Hwang2;ZHANG Zheng1;XU Rui-Qing1;XIAO Shu-Dong1;CHE Xing-Lai1;YU Yong-Nan1;W. C. Ma3;J. D. Cole4;M. W. Drigert4;I. Y. Lee5;J. O.Rasmussen5;Y. X. Luo2,5
1Department of Physics, Tsinghua University, Beijing 100084
2Department of Physics, Vanderbilt University, Nashville, Tennessee 37235, USA
3Department of Physics, Mississippi State University, Mississippi 39762, USA
4Idaho National Engineering and Environmental Laboratory, Idaho Fall, Idaho 83415-2114, USA
5Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
Abstract： High spin states in neutron-rich 110Ru nucleus have been investigated by measuring high-fold prompt γ-ray coincidence events of the spontaneous fission of 252Cf with the Gammasphere detector array. The ground-state band and the γ-vibrational band have been confirmed and extended with spin up to 18ħ and 13ħ, respectively. The other three side bands, two proposed as two-quasiparticle bands and one proposed as a four-quasiparticle band,have been observed for the first time. The possible configurations for the quasi-particle bands are discussed. The cranked shell model calculations show that 110Ru nucleus may have oblate triaxial deformation with parameters β2 = -0.30 and γ = 24°, and the band crossing in the yrast band is due to the alignment of a pair of h11/2 neutrons.
JIANG Zhuo;ZHU Sheng-Jiang;J. H. Hamilton;A. V. Ramayya;J. K. Hwang;ZHANG Zheng;XU Rui-Qing;XIAO Shu-Dong;CHE Xing-Lai;YU Yong-Nan;W. C. Ma;J. D. Cole;M. W. Drigert;I. Y. Lee;J. O.Rasmussen;Y. X. Luo;. Collective Bands in Neutron-Rich 110Ru Nucleus[J]. 中国物理快报, 2003, 20(3): 350-353.
JIANG Zhuo, ZHU Sheng-Jiang, J. H. Hamilton, A. V. Ramayya, J. K. Hwang, ZHANG Zheng, XU Rui-Qing, XIAO Shu-Dong, CHE Xing-Lai, YU Yong-Nan, W. C. Ma, J. D. Cole, M. W. Drigert, I. Y. Lee, J. O.Rasmussen, Y. X. Luo,. Collective Bands in Neutron-Rich 110Ru Nucleus. Chin. Phys. Lett., 2003, 20(3): 350-353.
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.
CHE Xing-Lai;ZHU Sheng-Jiang;J. H. Hamilton;A. V. Ramayya;J. K. Hwang;J. O. Rasmussen;Y. X. Luo;CHEN Yong-Jing;LI Ming-Liang;DING Huai-Bo;U Yong-Nam;I. Y. Lee;W. C. Ma. High Spin Band Structure in 112Ru[J]. 中国物理快报, 2006, 23(2): 328-331.
2003, Vol. 20 
