| Gamma Vibrational Bands and Chiral Doublet Bands in A≈100 Neutron-rich Nuclei |
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| 作者单位： | ZHU Sheng-jiang,DING Huai-bo,CHE Xing-lai,WANG Jian-guo,XU Qiang,GU Long,YANG Yun-yi(Department of Physics,Tsinghua University,Beijing 100084,China);J.H.Hamilton,A.V.Ramayya,J.K.Hwang(Department of Physics,Vanderbilt University,Nashville,TN 37235,USA);Y.X.Luo(Department of Physics,Vanderbilt University,Nashville,TN 37235,USA;Lawrence Berkeley National Laboratory,Berkeley,CA 94720,USA);J.O.Rasmussen,K.Li(Lawrence Berkeley National Laboratory,Berkeley,CA 94720,USA);S.Frauendorf,V.Dimitrov(Physics Department,Notre Dame University,Notre Dame,IN 46556,USA) |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划)，Special Program of Higher Education Science Foundation of China，U.S.Department of Energy |
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| 摘 要： | The level structures of neutron-rich ~(105)Mo,~(106)Mo,~(108)Mo and 110Ru nuclei in A≈100 region have been carefully investigated by coincidence measurements of the prompt γ-rays populated in the spontaneous fission of ~(252)Cf with the Gammasphere detector array.In 105Mo,one-phonon K =9/2 and two-phonon K=13/2 γ-vibrational bands have been identified.In ~(108)Mo,one-phonon γ-vibrational band is expanded and two-phonon γ-vibrational band has been identified.Two similar sets of bands in ~(106)Mo and ~(110)Ru are observed to high spins,which have been proposed as the soft chiral γ-vibrational bands.The characteristics for these γ-vibrational bands and chiral doublet bands have been discussed.
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| 关 键 词： | γ-vibrational band |
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