| 146Tb的能级结构研究 |
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| 引用本文： | 谢成营,周小红,郑勇,张玉虎,刘忠,潘强岩,甘再国.146Tb的能级结构研究[J].中国物理 C,2003,27(10):884-887. |
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| 作者姓名： | 谢成营 周小红 郑勇 张玉虎 刘忠 潘强岩 甘再国 |
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| 作者单位： | [1]中国科学院近代物理研究所兰州730000 [2]JapanAtomicEnergyResearchInstitute，Tokai，Ibaraki319-1195,Japan [3]ChibaUniversity,Inage-ku,Chiba263-8512,Japan [4]ChibaInstituteofTechnology,Narashino,Chiba275-0023,Japan |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，10005012,10025525，TG2000077400，， |
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| 摘 要： | 利用能量为161—175MeV的32S束流,通过反应118Sn(32S,1p3n)146Tb研究了双奇核146Tb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146Tb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146Tb新发现能级的自旋值. 用一个h11/2价质子和一个h11/2－1价中子空穴耦合、πh11/2υh11/2－1与146Gd核实激发态的耦合对146Tb的能级结构进行了定性地讨论.
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| 关 键 词： | 在束γ谱学 高自旋态 能级纲图 |
| 收稿时间： | 2003-1-7 |
Study of Level Structure in 146Tb |
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| T.Hayakawa,M.Oshima,T.Toh,T.Shizuma,J.Katakura,Y.Hatsukawa,M.Matsuda,H.Kusakari,M.Sugawara.Study of Level Structure in 146Tb[J].High Energy Physics and Nuclear Physics,2003,27(10):884-887. |
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| Authors: | THayakawa MOshima TToh TShizuma JKatakura YHatsukawa MMatsuda HKusakari MSugawara |
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| Abstract: | The level structure of high-spin states of doubly odd nucleus l46Tb has been studied via the 118Sn (32S, 1p3n) Tb reaction using techniques of in-beam y-ray spectroscopy. Measurements of r-ray excitation functions, y-ray anisotropies, X-r and r-r-t coincidences were performed with 12 BGO(AC)HPGe detectors. Based on the gated spectra, r-r coincidence relationships, intensity balances and cross-over transitions, the level scheme in Tb has been extended up to an excitation energy of 8390 keV, and 41 new 7-rays are added into the level scheme. The spins for the new established levels have been assigned according to the results of the measured 7-ray anisotropies. The levels in Tb are interpreted qualitatively by coupling a h11/2 proton to a h11/2 neutron hole and h11/2 u h11/2 -1 to the excited states in 146Gd core. |
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| Keywords: | in-beam y-spectroscopy high-spin state level scheme |
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