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Study of Collective Rotational Bands in 179Pt

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IMP & HIRFL Annual Report 2005年 47-48页

作者： M. Oshima T. Toh A. Osa M. Koizumi j. katakura Y. Hatsukawa M. Matsuda M. Sugawara j.pan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Chib Insitue of Technology NarashinoChiba 275-0023Japan

In-beamγ-ray spectroscopic experiment for the deformed odd-A nucleus 179Pt has been performed via the 149Sm(35Cl, p4n) reaction at beam energy of 180 MeV. The 35Cl beam was provided by the tandem accelerator at the j.pan Atomic Energy Research Institute (j.ERI). The target was an isotopic 149Sm foil of 1. 5 mg /cm2 thickness with a 5 me/cm2 Pb backing. Based on the measured results, three rotational bands

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Study of Collective Rotational Bands in ^(179)Pt

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2005年第1期 47-48页

作者： Xu Yanbing Zhou Xiaohong Zhang Yuhu Song Litao Guo Yingxiang Sun Zhiyu M. Oshima T. Toh A. Osa M. Koizumi j. katakura Y. Hatsukawa M. Matsuda M. Sugawara 不详 j.pan Atomic Energy Research Institute Tokai lbaraki 319 1195 Japan. Chib lnsitue of Technology Narashino Chiba 275-0023 Japan.

关键词：集体转动带日本原子能研究所串列加速器光谱实验实测结果奇A核线变形能量束

Study of Multi-particle Excitations in 146Tb

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IMP & HIRFL Annual Report 2004年 68-68页

作者： T. Hayakawa,M. Oshima,T. Toh,T. Shizuma,j. katakura,Y. Hatsukawa,M. Matsuda,H. Kusakari,M. Sugawara j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 j.pan Chiba University Inage-ku Chiba 263-8512 j.pan Chiba Institute of Technology Narashino Chiba 275-0023 j.pan

Study of in-beam γ-ray spectroscopy of 146Tb has been carried out by using the 118Sn(32S,1p3n)146Tb reaction. Based on the experimental measured results, the level scheme of 146Tb has been revised significantly and extended up to an excitation energy of 8.39 MeV. Preliminary results of the present work have been reported in a letter. The level structure shows characteristics of a spherical nucleus. The odd-odd nucleus 146Tb has one proton-particle and one neutron-hole with respect to the doubly closed nucleus 146Gd, and its low-

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Study of Multi-particle Excitations in ^(146)Tb

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2004年第1期 47-47页

作者： Xie Chengying Zhou Xiaohong Zheng Yong Zhang Yuhu Liu Zhong T. Hayakawa M. Oshima T. Toh T. Shizuma j. katakura Y. Hatsukawa M. Matsuda H. Kusakari M. Sugawara j.pan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Chiba University Inage-ku Chiba 263-8512 Japan. Chiba Institute of Technology Narashino Chiba 275-0023 Japan.

关键词：激发能量多粒子实验测量层次结构 MCV 水

Systematic Properties of the 1／2[660]^i13／2 Bands in Odd-A Au Nuclei

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Chinese Physics Letters 2004年第7期21卷 1243-1246页

作者： SONGLi-Tao ZHOUXiao-Hong ZHANGYu-Hu GUOYing-Xiang SUNZhi-Yu M.Oshima T.Toh A.Osa M.Koizumi j.katakura Y.Hatsukawa M.Matsuda M.Sugawara 1nstituteofModernPhysics ChineseAcademyofSciencesLanzhou730000 j.panAtomicEnergyResearchInstitute TokaiIbaraki319-1195Japan ChibaInstituteofTechnology NarashinoChiba275-0023Japan

A standard in-beam γ-spectroscopy experiment for 179Au has been performed via the 149Sm (35Cl, 5n) reaction at beam energies of 164–180MeV. Based on the analysis of the experimental results, a rotational band built on the 1/2[660](πi13/2) proton intruder orbital is established for 179Au for the first time. Systematic properties of the 1/2[660](i13/2) band in odd-A Au nuclei are discussed, and the evolution of bandhead energy and deformation with changing neutron number are revealed.

关键词： Ultraviolet spectroscopy

Doubly Decoupled Structure in Odd-Odd ^(178-186)Ir Nuclei

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Chinese Physics Letters 2001年第1期18卷 27-29页

作者：张玉虎 T.Hayakawa M.Oshima Y.Toh j.katakura Y.Hatsukawa M.Matsuda N.Shinohara T.Ishii H.Kusakari M.Sugawara T.Komatsubara Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 j.pan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Chiba University Inage-kuChiba 263-8512Japan j.pan Chiba Institute of Technology NarashinoChiba 275-0023Japan Institute of Physics and Tandem Accelerator Center University of TsukubaIbaraki 305-0006Japan

High-spin states in 178'180Ir have been studied via the 152'154Sm(31P,5nγ)reactions through excitation functions,x-γandγ-γ-t coincidence measurements.A doubly decoupled band has been identified in each of the *** level spacings for such structures in odd-odd ^(178-186)Ir have been inspected and thus a regular level staggering as a function of the neutron number is *** particular phenomenon may be associated with bandmixing at lower excitation energies.

关键词： excitation coincidence

Search for Signature Inversion in the πi_(13/2) vi_(13/2) Band in Odd-Odd ^(178I)r

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Chinese Physics Letters 2001年第10期18卷 1323-1326页

作者：张玉虎 T.Hayakawa M.Oshima Y.Toh j.katakura Y.Hatsukawa M.Matsuda N.Shinohara T.Ishii H.Kusakari M.Sugawara T.Komatsubara K.Furuno Institute of Modern Physics:Chinese Academy of Sciences Lanzhou 7300002 j.pan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Chiba University Inage-kuChiba 263-8512Japan Chiba Institute of Technology NarashinoChiba 275-0023Japan Institute of Physics and Tandem Accelerator Center University of TsukubaIbaraki 305-0006Japan

The search for the ri_(13/2) vi_(13/2 ) band in ^(178)Ir has been conducted through the ^(152)Sm(^(31) P, 5nγ)^( 178)Ir reaction and the excitation functions, x-γ and γ-γ-t coincidence measurements. Five rotational bands have been newly identified. The low-spin signature inversion in the πi13/2 vi13/2 band has been confirmed by the observations of linking transitions and signature crossing at I = 25.5 h. The inversion phenomenon in rh11/2 vi_(13/2), rh9/2 vi_(13/2) and ri_(13/2) vi13/2 structures in ^(178)Ir provides a unique testing ground for different theoretical interpretations.

关键词： signature Inversion

Identification of a New Four-Quasiparticle State in Odd-Odd 186Au

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Chinese Physics Letters 2012年第2期29卷 63-66页

作者：李仕成石跃张玉虎周小红许甫荣方永得柳敏良丁兵郭松李广顺周厚兵 M.Oshima Y.Toh M.Koizumi A.Osa A.Kimura Y.Hatsukawa H.Hayakawa T.Shizuma j.katakura M.Matsuda T.Morikawa M.Sugawara H.Kusakari Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 Graduate University of Chinese Academy of Sciences Beijing 100049 School of Physics and State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBeijing 100871 j.pan Atomic Energy Agency TokaiIbaraki 319-1195Japan Department of Physics Kyushu UniversityFukuoka812-81Japan Chiba Institute of Technology NarashinoChiba 275-0023Japan Chiba University Inage-kuChiba 263-8512Japan

The high-spin level structure of 186 Au is re-investigated by means of in-beam γ-ray spectroscopy via the 172 Yb(19 F,5nγ )186 Au *** oblate bands previously reported are revised and extended to higher-spin states.A new Iπ =(20+) excited state has been identified and assigned to the πh-111/2 (×) vi-213/2h-19/2 *** total Routhian surface and cranked shell model calculations suggest that the πh-111/2 (×) vi-213/2h-19/2 band in 186Au has a non-axial deformation.

关键词： configuration deformation reaction

^(179)Au的1/2[660](πi_(13/2))转动带

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高能物理与核物理 2004年第2期28卷 148-151页

作者：宋立涛周小红郭应祥孙志宇 M.Oshima T.Toh A.Osa M.Koizumi j.katakura Y.Hatsukawa M.Matsuda M.Sugawara 中国科学院近代物理研究所兰州730000 j.pan Atomic Energy Research Institute Chiba Institute of Technology

利用能量为 16 4— 180MeV的 3 5Cl束流 ,通过重离子核反应 14 9Sm(3 5Cl ,5n)研究了 179Au的高自旋态能级结构 .实验进行了γ射线的激发函数、X γ和γ γ t符合测量 .基于对实验测量结果的分析 ,首次建立了 179Au的 1 2 [6 6 0 ](πi1... 详细信息

利用能量为 16 4— 180MeV的 3 5Cl束流 ,通过重离子核反应 14 9Sm(3 5Cl ,5n)研究了 179Au的高自旋态能级结构 .实验进行了γ射线的激发函数、X γ和γ γ t符合测量 .基于对实验测量结果的分析 ,首次建立了 179Au的 1 2 [6 6 0 ](πi13 2 )转动带 .结合已有的实验数据 ,着重讨论了奇AAu核中1 2 [6 6 0 ](πi13 2 )

关键词：重离子核反应转动带能级纲图 γ射线质子数激发能原子核物理

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