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High-spin states of ^(125)Sb:Particle-core excitation coupling

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Science China(Physics,Mechanics & Astronomy) 2003年第4期46卷 390-397页

作者：刘忠张玉虎马英君 Y.Sasaki K.Yamada H.Oshima H.Yokose M.Ishizuka t.komatsubara K.Furuno Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics and tandem Accelerator Center University of TsukubaIbaraki 305-0006Japan

Excited states of125Sb have been studied using in-beam γ spectroscopy techniques via the124Sn(7Li, α2n) reaction at a beam energy of 32 MeV. A high-spin level scheme including 21 new γ-transitions and 14 new excited states have been established. three isomers have been identified at 1970, 2110 and 2471 keV and the ranges of their half-lives have been estimated from the delayed coincidence data. the level structure of125Sb is discussed in terms of particle-core excitation coupling. With the help of empirical shell model calculations the three isomers are proposed to have three-quasiparticle πg7/2?v(h 11/2 s 1/2)5?, πg7/2?v(h 11/2 d 3/2)7? and πg7/2?v(h 11 2/2 )10 + configurations, respectively.

关键词： in-beam γ spectroscopy isomer particle-core coupling

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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

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A New High-Spin Level Scheme of ^128I

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Chinese Physics Letters 2010年第8期27卷 58-61页

作者：王海霞张玉虎丁兵周小红张宁涛柳敏良马英君 Y. Sasakiz K. Yamada H. Ohshima S. Yokose M. Ishizuka t. komatsubara K. Furuno Insititute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 Graduate School of the Chinese Academy of Sciences Beijing 100049 Department of Physics Jilin University Changehun 130021 Institute of Physics and tandem Accelerator Center University of Tsukuba Ibaraki 305-0006 Japan

High-spin states in the beam energies. A new and 72 γ transitions odd-odd nucleus ^128I are investigated via the ^124 Sn（^7 Li,3n）^128 I reaction at 28 and 32 Me V level scheme of 12sI is established up to high-spin states at I^π = 16, including 48 levels the present level scheme is largely different from the one in a recent publication due to identification of several doublet and triplet γ transitions and their proper placements in the level scheme. the high-spin level structure exhibits no obvious collective properties and is possibly associated with two and multi-quasiparticle configurations.

关键词： ENERGY levels (Quantum mechanics) PHASE transformations (Physics) NUCLEAR reactions PARtICLE beams QUASIPARtICLES (Physics)

Structure of the πg7／2[404]7／2^＋ Band in Odd Proton Nucleus ^123I

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Chinese Physics Letters 2004年第6期21卷 1024-1026页

作者： WANGShou-Yu MAYing-Jun t.komatsubara LIUYun-Zuo ZHANGYu-Hu K.Furuno t.Hayakawa J.Mukai Y.Iwata t.Morikawa G.B.Hagemann G.Sletten J.Nyberg D.Jerrestam H.J.Jensen J.Espino J.Gascon N.Gjφrup B.Cederwall P.O.tjφm DepartmentofPhysics JilinUniversityChangchun130023 InstituteofPhysicsandtandemAcceleratorCenter UniversityofTsukubaIbaraki305Japan InstituteofModernPhysics ChineseAcademyofSciencesLanzhou730000 DepartmentofPhysics FacultyofScienceHiroshimaUniversityHiroshima724Japan DepartmentofPhysics FacultyofScienceKyushuUniversityFukuoka812Japan NielsBohrInstitute TandemAcceleratorLaboratoryRisφDK-4000RoskildeDenmark ManneSiegbabnInstituteofPhysics S-10405StockholmSweden DepartmentofPhysics UniversityofOsloNorway

High spin states of the odd proton nucleus 123I have been populated in the reaction 116Cd(14N, 5n2p) at a beam energy of 65MeV. two previously known positive-parity ΔI = 2 sequences have been extended up to 31/2+ and 41/2+. In addition, a number of ΔI = 1 transitions linking the two ΔI = 2 sequences have been observed. It is suggested that both the ΔI = 2 sequences are built upon the oblate πg7/2[404]7/2+ Nilsson configuration.

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形变双奇核^(178)Ir转动带能级的旋称反转

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高能物理与核物理 2000年第12期24卷 1123-1130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 中国科学院近代物理研究所兰州730000 Japan Atomic Energy Research Institute Chiba University Chiba Institute of technology Institute of Physics and tandem Accelerator Center

利用１５２Ｓｍ（３１Ｐ，５ｎγ）１７８Ｉｒ反应产生并研究了双奇核１７８Ｉｒ的高自旋态．实验中进行了１７８Ｉｒ核的在束 γ测量，包括γ射线的激发函数测量、Ｘ－γ和γ－γ符合测量．首次建立了双奇核１７８Ｉｒ基于πｈ９／２... 详细信息

利用１５２Ｓｍ（３１Ｐ，５ｎγ）１７８Ｉｒ反应产生并研究了双奇核１７８Ｉｒ的高自旋态．实验中进行了１７８Ｉｒ核的在束 γ测量，包括γ射线的激发函数测量、Ｘ－γ和γ－γ符合测量．首次建立了双奇核１７８Ｉｒ基于πｈ９／２νｉ１３／２和πｈ１１／２νｉ１３／２准粒子组态上的转动带能级纲图．发现在低自旋区，两个转动带能级均出现旋称反转．对此核区半退耦带的旋称反转作了简要的分析和讨论．

关键词：在束γ谱学形变双奇核转动带旋称反转

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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： ZHANG Yu-Hu 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 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

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

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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Rotational Band Structures in Odd-Odd 178Ir

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IMP & HIRFL Annual Report 2001年 40-41页

作者： t.Hayakawa,M.Oshima,Y.toh,J.Katakura,Y.Hatsukawa,M.Matsuda,N.Shinohara,t.Ishii,H.Kusakari,M.Sugawara,t.komatsubara,K.Furuno 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. 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 University Inage-ku Chiba 263-8512 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.

High-spin states of odd-odd178Ir has been studied by using152Sm(31P,5n)178Ir ***31P bcam was provided by the JAERI（Japan Atomic Enetgy Research Institute）tandem *** target is an enriched152Sm metallic foil of 1 mg/cm2thickness with 5 mg/cm2Au *** excitation function was measured by using31P beam from 150 to 170 MeV with 5 MeV energy *** bearn energy of 160 MeV

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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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