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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 JapanAtomicEnergyResearchInstitute 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

Negative Parity Bands and Signature Splitting Inversion in ^80Rb

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Chinese Physics Letters 2003年第11期20卷 1932-1935页

作者：袁观俊杨春祥王月张振龙孟锐 M.Oshima Y.Toh a.osa M.Koizumi Y.Hatsukawa M.Matsuda T.Hagakawa M.M.Ndontcheng 温书贤贺创业竺礼华王治民李广生马瑞刚吴晓光 DepartmentofPhysics JinlinUniversityChangchun130023 JapanAtomicEnergyResearchInstitute TokaiJapan DepartmentofPhysics UniversityofDoualaDoualaCameroun ChinaInstituteofAtomicEnergy Beijing102413

High spin states in 80Rb were studied via the 65Cu+19F, 66Zn+18O and 68Zn+16O reactions. The 75-MeV 19F, 76-MeV 18O and 80-MeV 16O beams were provided by the CIAE HI-13 Tandem accelerator and the JAERI Tandem accelerator. The prompt γ-γ coincidence and the directional correlation from oriented nuclei (DCO) were measured by the detector arrays in CIAE and JAERI. Twenty-three new states with 28 new transitions have been assigned to 80Rb. The states were observed up to spins of 20+ and 22− in the α = 0 branch for the positive and negative parity yrast bands respectively. The negative parity non-yrast bands were significantly extended up to spins of 22− and 15−. The band crossings with frequencies 0.51MeV and 0.61MeV in the α = 0 cascade were observed for the first time. The signature splitting was observed in both negative parity bands. The signature inversions at spins of about 7 and 15 were observed.

关键词： HIGH-SPIN STATES

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A≈110质量区奇A核形状演化研究

原子核物理评论 2011年第1期28卷 41-43页

作者：周厚兵周小红张玉虎郑勇李广顺 M.Oshi ma Y.Toh M.Koizumi a.osa Y.Hatsukawa 中国科学院近代物理研究所甘肃兰州730000 中国科学院研究生院北京100049 Japan Atomic Energy Agency Tokai

应用E-GOS(E-Gamma Over Spin)曲线方法研究了A≈110质量区奇A核结构随角动量增加的演化,发现随着角动量的增加原子核的激发特性从振动逐渐演化为转动。

关键词： E-GOS曲线相变形状演化

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： LI Shi-Cheng SHI Yue ZHANG Yu-Hu ZHOU Xiao-Hong XU Fu-Rong FANG Yong-De LIU Min-Liang DING Bing GUO Song LI Guang-Shun ZHOU Hou-Bing 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 Japan 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

Observation of Rotational Bands in Odd-Odd 176Ir

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IMP & HIRFL Annual Report 2001年 41-42页

作者： M.Oshima,Y.Toh,M.Koizumi,a.osa,T.Shizuma,T.Hayakalwa,M.Sugawara,H.Kusakari,T.Morikawa Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan. Japan 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. Department of Physics Kyushu University Fukuoka 812-81 Japan.

High-spin states of odd-odd176Ir has been studied for the first time,by using149Sm(31P,4n)176Ir ***31P beam was provided by the JAERI（Japan Atomic Energy Research Institute）tandem *** target was an enriched149Sm met...

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双奇核^(188)Au的准粒子带结构研究

高能物理与核物理 2006年第2期30卷 99-104页

作者：方永得张玉虎 M.Oshima Y.Toh 周小红 M.Koizumi a.osa A.Kimura Y.Hatsukawa T.Morikawa M.Nakamura M.Sugawara H.Kusakari 中国科学院近代物理研究所 Japan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Department of Physics Kyushu UniversityFukuoka 812-81Japan Chiba Institute of Technology NarashinoChiba 275-0023Japan Chiba University Inage-kuChiba 263-8512Japan

利用在束γ谱学实验技术,通过173Yb(19F,4nγ)反应布居了188Au的高自旋态,并对其准粒子带结构进行了研究．基于实验测量结果,对原有的双奇核188Au能级纲图做了较大的修改．通过系统性比较,对15+以上的能级结构进行了讨论．

关键词：在束γ谱学双奇核^188Au 高自旋态 γ形变

Observation of Rotational Bands in Odd-Odd ^(176)Ir

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IMP & HIRFL Annual Report 2001年第1期 41-42页

作者： Zhang Yulu M.Oshima Y.Toh M.Koizumi a.osa T.Shizuma T.Hayakalwa M.Sugawara H.Kusakari T.Morikawa Wen Shuxian Zhu Lihua Japan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Chiba University Inage-kuChiba 263-8512Japan Chiba Institute of Technology NarashinoChiba 275-0023Japan Department of Physics Kyushu UniversityFukuoka 812-81Japan China Institute of Atomic Energy Beijing

High-spin states of odd-odd^(176)Ir has been studied for the first time,by using^(149)Sm(^(31)P,4n)^(176)Ir ***^(31)P beam was provided by the JAERI(Japan Atomic Energy Research Institute)tandem *** target was an enriched^(149)Sm metallic powder of 2.1 mg/cm^(2) thickness evaporated on to a 5.5mg/cm^(2) Pb backing layer.

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Experimental Study of High-Spin States in Odd-Odd 172Re

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Experimental Study of High-Spin States in Odd-Odd 172Re

^(179)Au的1/2[660](πi_(13/2))转动带

第十二届全国核物理大会暨第七届会员代表大会

作者： M.Oshima Y.Toh M.Koizumi a.osa A.Kimura Y.Hatsukawa T.Morikawa M.Nakamura M.Sugawara H.Kusakari T.Komatsubara K.Furuno Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan Department of Physics Kyushu University Fukuoka 812-81 Japan Chiba Institute of Technology Narashino Chiba 275-0023 Japan Chiba University Inage-ku Chiba 263-8512 Japan Institute of Physics and Tandem Accelerator Center University of Tsukuba Ibaraki 305-0006 Japan

High-spin states in the odd-odd Re have been investigated via the Sm(Al,4n)Re reaction through excitation functions, x-γand γ-γcoincidence measurements. A level scheme consisting of three rotational bands have been identified for the first time extending the high-spin studies of A～160 odd-odd nuclei to the currently lightest rhenium isotope. The three bands have

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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 Japan 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