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13篇 您的检索式:作者名="T.Toh"
    题名 作者 年代 出处 被引量
1原子核^(145)Tb的多准粒子激发态显示文摘利用能量为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.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 2004中国科学(G辑)2004,34,3:1
2^(179)Au的1/2[660](πi_(13/2))转动带显示文摘利用能量为 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 )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 2004高能物理与核物理2004,28,2:0
3Systematic Properties of the 1/2[660]^i13/2 Bands in Odd-A Au Nuclei显示文摘A standard in-beam γ-spectroscopy experiment for^179 Au has been performed via the ^149Sm (^35Cl, 5n) reaction at beam energies of 164-180 MeV. Based on the analysis of the experimental results, a rotational band built on 1/2[660](π^i13/2)proton intruder orbital is established for^179 Au for the first time. Systematic properties of the 1/2[660](π^i13/2) band in odd-A Au nuclei are discussed,and the evolution of bandhead energy and deformation with changing neutron number are revealed.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 2004Chinese Physics Letters2004,21,7:0
4Study of Level Structure in ^(146)Tb显示文摘The level structure of doubly odd nucleus 146Tb has been studied via the 118Sn(32S, 1p 3n)146Tb reaction by using techniques of in-beam γ-iay spectroscopy. Measurements of 7-ray excitation functions, 7-ray anisotropies, X-γ and γ-γ-t coincidences were performed with 12 BGO(AC)HPGe detectors. Based on the γ-γ coincidence relationships, intensity balances and cross-over transitions, the level scheme of 146Tb has been extended upXieChengying ZhouXiaohong ZhengYong ZhangYuhu LiuZhong T.Hayakawa M.Oshima T.Toh T.Shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara 2002近代物理研究所和兰州重离子加速器实验室年报:英文版2002,,1:0
5Interpretation of Yrast Levels in ^(145)Tb显示文摘We established the level scheme of 145Tb for the first time. The excited states below 2 MeV have been interpreted qualitatively by coupling an h11/2 valence proton to the 0+, 2+, 4+ and 3- excited states in the 144Gd core nucleus, and the yrast levels in excitation energy range from 2.1 to 3.4 MeV have been suggested from the (πh211/2d-15/2/g-17/2) proton excitations or the couplings of the h11/2 proton to the 5- and 7-ZhangYuhu LiuMinliang T.Hayalmwa M.Oshima T.Toh T.Shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara ZhengYong~ ZhouXiaohong 2002近代物理研究所和兰州重离子加速器实验室年报:英文版2002,,1:0
6^(145)Tb的高自旋态能级纲图显示文摘利用能量为 1 61— 1 75MeV的32 S束流 ,通过反应118Sn( 32 S ,1p4n)产生了145 Tb的高自旋态 .进行了γ射线的激发函数、γ γ t符合测量 .首先建议了由 2 4条能级和 4 2条γ跃迁组成的145 Tb核的能级纲图 ,并指定了各条能级的自旋值及部分低位能级的宇称 .用一个πh11/ 2 价质子与144 Gd核芯激发态的耦合定性地解释了145郑勇 周小红 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 2002高能物理与核物理2002,26,4:0
7Systematic Behaviors of Signature Inversion in πh_(9/2)  vi_(13/2) Bands in A~170 Mass Region显示文摘Low-spin signature inversion in the πh9/2[?]vi_(13)/2 band was reported for the first time by Bark et al.~[1]in ^(162,164)Tm and ^(174)Ta in 1997.Since then,this inversion phenomenon has been found in several neighboring odd-odd nuclei.During the past few years,we have made great efforts to investigate the band structuresM.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 2001IMP & HIRFL Annual Report2001,,1:0
8Low-spin Signature Inversion in πi_(13/2)  vi_(13/2) Bands of Odd-odd ^(176,178)Ir and ^(182,184)Au Nuclei显示文摘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 interests.Up to date,the signature inversion has been systematically observed throughout the chart of nuclides in the πg9/2[?]vg9/2,πh_(11)/2,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 2001IMP & HIRFL Annual Report2001,,1:0
9Semi-decoupled Bands in Odd-Odd ^(182)Au显示文摘High-spin states of odd-odd^(182)Au has been studied for the first time,by USing^(152)Sm(^(35)Cl,5n)^(182)Au reaction at 183MeV beam energy.The^(35)Cl beam was provided by the JAERI(Japan Atomic Energy Research Institute)tandem accelerator.The target is an enriched^(152)Sm metallic fon of 1 mg/cm^2 thickhess with 5 mg/cm^2T.Hayakawa M.Oshima T.Toh T.Shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara K.Furuno T.Komatsubara T.Une 2001IMP & HIRFL Annual Report2001,,1:0
10^(179)Pt转动带性质的研究显示文摘利用能量为 16 4— 180MeV的3 5Cl束流 ,通过14 9Sm(3 5Cl,p4n)反应研究了179Pt的高自旋态能级结构 .进行了γ射线的激发函数、X γ和γ γ t符合测量 ,建立了基于 1 2 -[5 2 1],5 2 -[5 12 ]和7 2 + [6 33]组态的 3个转动带 .实验上观测到 1 2 -[5 2 1]带在ω =0 2 7MeV附近顺排角动量突然增大 ,且 7 2 + [6 33]带具有较大的旋称劈裂 .通过比较奇APt同位素和179Pt的同中子素能级结构的系统性 ,对相关现象进行了分析和讨论 .徐岩冰 周小红 宋立涛 郭应祥 孙志宇 M.Oshima T.Toh A.Osa M.Koizumi J.Katakura Y.Hatsukawa M.Matsuda M.Sugawara 2004高能物理与核物理2004,28,6:0
11Multi-quasiparticle Excitations in ^(145)Tb显示文摘Study of in-beam γ-ray spectroscopy of ^145Tb has been carried out by using ^118Sn (32 S, 1p4n) ^145Tb reaction. Excitation functions, X-γ-t and γ-γ-t coincidences and γ-ray anisotropies were measured. Here, t refers to the relative time difference between any two coincident γ-rays detected within ±200 ns. A level scheme of ^14tTb, including 81 γ-transitions as shown in Fig.l, has been established up to 7.4 MeV in excitation energy and spinparity assignments for most of the observed levels have been done. The level structure shows characteristics of spherical nucleus. The observed states with excitation energies less than 2 MeV are interpreted by coupling an h11/2 proton to the 2^+, 4^+ and 3^- core excitations in ^144Gd. The excitation energies of these states fit wellin to the systematics of the neighboring odd-A N=80 isotones, and are well reproduced by the quasiparticle-cluster interaction calculations[1]. Semi-empirical shell model calculations[2] have been done for the higher-lying levels. The results clearly reveal the characteristic features of multiparticle configurations in a spherical nucleus. Specific configurations are proposed for the yrast and some non-yrast levels.ZhengYong ZhouXiaohong ZhangYuhu T.Hayakawa M.Oshima T.Toh T.Shizuma J.Katakura Y.Hatsukawa M.Matsuda H.Kusakari M.Sugawara K.Furuno T.Komatsubara 2003近代物理研究所和兰州重离子加速器实验室年报:英文版2003,,1:0
12Study of 1/2[660](πi_(13/2)) Rotation Band in ^(179)Au显示文摘High-spin states in ^179Au have been studied experimentally by using the ^149Sm(^35C1, 5n) reaction at beam energies of 164,~180 MeV. The ^35C1 beam was provided by the tandem accelerator at the Japan Atomic En-ergy Research Institute (JAERI). The target is an isotopically enriched ^149Sm metallic foil of 1.5 mg/cm^2 thickness with a 5.0 mg/cm^2 Pb backing. Measurements of γ-ray excitation functions, X-γ coincidences and γ-γ-t coincidences were performed with 13 HPGe's with BGO anti-Compton shields and three LOAX detectors.songLitao ZhouXiaohong GuoYingxiang SunZhiyu M.Oshima T.Toh A.Osa M.Koizumi J.Katakura Y.Hatsukawa M.Matsuda M.Sugawara 2003近代物理研究所和兰州重离子加速器实验室年报:英文版2003,,1:0
13^(146)Tb的能级结构研究显示文摘利用能量为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。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 2003高能物理与核物理2003,27,10:0
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