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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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MeV-and Sub-MeV-photon Sources Based on Compton Backscattering at SPring-8 and KPSI-JAEA

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原子核物理评论 2009年第S1期26卷 94-99页

作者： K.Kawase M.Kando t.Hayakawa I.Daito S.Kondo t.Homma t.Kameshima H.Kotaki Y.Fukuda A.Faenov t.shizuma S.V.Bulanov t.Kimura t.tajima M.Shoji S.Suzuki K.tamura H.Ohkuma Y.Arimoto t.Yorita M.Fujiwara S.Okajima Kansai Photon Science Institute Japan Atomic Energy Agency Japan Synchrotron Radiation Research Institute Department of Physics Osaka University Research Center for Nuclear Physics Osaka University

Recently we have constructed two facilities for generating photon beams in the MeV and sub-MeV energy regions by means of the Compton backscattering with a laser and an electron beam at SPring-8 and at Kansai Photon Science Institute of Japan Atomic Energy Agency(KPSI-JAEA). the MeV-photon source at SPring-8 consists of a continuous-wave optically-pumped far infrared laser with a wavelength of 118.8 μm and an 8 GeV stored electron beam. Present MeV-photon flux is estimated to be 1.3×103 photons/s. On the other hand,the sub-MeV-photon source at KPSI-JAEA consists of a pulse Nd∶YAG laser with a wavelength of 1 064 nm and a 150 MeV electron beam accelerated by microtron. In the first trial of the photon production in this source,backscattered photon flux is estimated to be 20 photons/pulse. Both the Compton backscattered photon sources have possibilities to be used for new tools in various fields such as nuclear physics,materials science,and astronomy.

关键词： laser Compton backscattering polarized γ-ray polarized X-ray

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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^(146)tb的能级结构研究

高能物理与核物理 2003年第10期27卷 884-887页

作者：谢成营周小红郑勇张玉虎刘忠潘强岩甘再国 t.Hayakawa M.Oshima t.toh t.shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara 中国科学院近代物理研究所兰州730000 Japan Atomic Energy Research Institute TokaiIbaraki 319-1195Japan Chiba University Inage-kuChiba 263-8512Japan Chiba Institute of technology NarashinoChiba 275-0023Japan

利用能量为161—175MeV的^(32)S束流,通过反应^(118)Sn(^(32)S,1p3n)^(146)tb研究了双奇核^(146)tb的高自旋态能级结构。实验进行了γ射线的激发函数、γ射线的各向异性度、X-γ和γ-γ-t符合测量。基于这些测量结果,建立了激发能达8390... 详细信息

利用能量为161—175MeV的^(32)S束流,通过反应^(118)Sn(^(32)S,1p3n)^(146)tb研究了双奇核^(146)tb的高自旋态能级结构。实验进行了γ射线的激发函数、γ射线的各向异性度、X-γ和γ-γ-t符合测量。基于这些测量结果,建立了激发能达8390kev的^(146)tb核的能级纲图,其中包括新发现的41条γ射线和新建立的27个能级,并指定了^(146)tb新发现能级的自旋值。用一个h_(11/2)价质子和一个h_(11/2)^(-1)价中子空穴耦合、πh_(11/2)υh_(11/2)^(-1)与^(146)Gd核实激发态的耦合对^(146)tb的能级结构进行了定性地讨论。

关键词：在束γ谱学高自旋态能级纲图 ^146tb 能级结构双奇核原子核结构

Low-spin Signature Inversion in πi13/2  vi13/2 Bands of Odd-odd 176,178Ir and 182,184Au Nuclei

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IMP & HIRFL Annual Report 2001年 39-40页

作者： M.Oshima,t.Morikawa,t.Hayakawa,t.toh,t.shizuma,M.Koizumi,A.Osa,J.Katakura,Y.Hatsukawa,M.Matsuda,N.Shinohara,t.Ishii,H.Kusakari,M.Sugawara,K.Furuno,t.Komatsubara,t.Une Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Department of Physics Kyushu University Fukuoka 812-81 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Japan Atomic Energy Research Inseitute tokai Ibaraki 319-1195 Japan. Chiba University Inage-ku Chiba 263-8512 Japan. Chiba Institute of technology Narashino Chiba 275-0023 Japan. Instiute of Physics and tandem Accelerator Center University of tsukuba Ibaraki 305-0006 Japan Instiute of Physics and tandem Accelerator Center University of tsukuba Ibaraki 305-0006 Japan Instiute of Physics and tandem Accelerator Center University of tsukuba Ibaraki 305-0006 Japan

Low-spin signature inversion is a very interesting phenomenon observed in a number of deformed odd-odd nuclei and it has been attracting large experimental and theoretical *** to date,the signature inversion has been ...

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Systematic Behaviors of Signature Inversion in πh9/2  vi13/2 Bands in A～170 Mass Region

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IMP & HIRFL Annual Report 2001年 38-39页

作者： M.Oshima,t.Morikawa,t.Hayakawa,t.toh,t.shizuma,M.Koizumi,A.Osa,J.Katakura,Y.Hatsukawa,M.Matsuda,N.Shinohara,t.Ishii,H.Kusakari,M.Sugawara,K.Furuno,t.Komatsubara,t.Une Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Depatment of Physics Kyushu University Fukuoka812-81 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Japan Atomic Energy Research Institute tokai Ibaraki319-1195 Japan. Chiba Uniersity Inage-ku Chiba263-8512 Japan. Chiba Institute of technology Narashino Chiba275-0023 Japan. Institute of Physics and tandem Accelerator Center University of tsukuba Ibaraki305-0006 Japan. Institute of Physics and tandem Accelerator Center University of tsukuba Ibaraki305-0006 Japan. Institute of Physics and tandem Accelerator Center University of tsukuba Ibaraki305-0006 Japan.

Low-spin signature inversion in the πh9/2[?]vi13/2 band was reported for the first time by Bark et al.[1]in162,164tm and174ta in *** then,this inversion phenomenon has been found in several neighboring odd-odd *** th...

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原子核^(145)tb的多准粒子激发态

中国科学（G辑） 2004年第3期34卷 325-334页

作者：郑勇周小红张玉虎柳敏良郭应祥雷相国 t.Hayakawa M.Oshima t.toh t.shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara 中国科学院近代物理研究所兰州730000 Japan Atomic Energy Research Institute tokai Ibaraki 319-1195Japan Chiba University Inage-ku Chiba 263-8512Japan Chiba Institute of technology Narashino Chiba275-0023Japan

利用能量为165 MeV的32S束流, 通过反应118Sn(32S, 1p4n)布居了145tb的高自旋态. 基于标准在束核谱学实验测量结果, 首次建立了激发能高达 7.4 MeV的145tb能级纲图. 145tb的能级结构具有球形原子核的特征, 其高自旋态是由单粒子激发... 详细信息

利用能量为165 MeV的32S束流, 通过反应118Sn(32S, 1p4n)布居了145tb的高自旋态. 基于标准在束核谱学实验测量结果, 首次建立了激发能高达 7.4 MeV的145tb能级纲图. 145tb的能级结构具有球形原子核的特征, 其高自旋态是由单粒子激发形成的. 根据邻近N = 80同中子素核结构的系统性, 采用一个11/2h价质子与偶偶核芯144Gd的弱耦合很好地解释了145tb激发能在2 MeV以下的能级结构. 利用多准粒子壳模型组态解释了激发能在2 MeV以上的晕态和部分近晕态能级.

关键词：原子核物理铽原子核多准粒子激发高自旋态能级纲图晕态能级

High-spin states and signature inversion in odd-odd ^(182)Au

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Science China(Physics,Mechanics & Astronomy) 2003年第4期46卷 382-389页

作者：张玉虎许甫荣何建军刘忠周小红甘再国 M.Oshima t.Hayakawa Y.toh t.shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara K.Furuno t.Komatsubara t.Une 温书贤王治民 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Department of technical Physics and MOE Key Laboratory Peking UniversityBeijing 100871China Japan 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 China Institute of Atomic Energy Beijing 102413China

High-spin states in182Au have been produced and studied via the152Sm(35Cl,5nγ)182Au reaction. the level scheme consisting of the πh 9/2?νi 13/2 and πi 13/2?νi 13/2 bands has been established for the first time. the low spin signature inversion in both bands has been found. the observed signature inversion phenomena can be interpreted qualitatively using the pairing and deformation self-consistent cranked Wood-Saxon calculations.

关键词： deformed odd-odd182Au rotational bands signature inversion cranked shell model