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NUCLEAR STRUCTURE OF NEUTRON RICH GADOLINIUM

机译:中子富含钆的核结构

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Nuclei in the region of ~(162-165)Gd are well deformed and therefore have excitation modes that are well explained by the collective model. We report results from two separate experiments. The first comes from the beta-decay of Eu isotopes produced at the HRIBF facility at Oak Ridge National Laboratory and measured at the Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS). The authors associated with this collaboration are shown with an *. The second study comes from the prompt gamma ray emission of ~(252)Cf fission fragments measured with Gammasphere. From the beta-decay experiment we have measured the decays of ~(162-165)Eu. We report collective band structures in ~(162,164)Gd. In addition we present new measurements of the half-lives of ~(162,163)Eu. In the SF data we measure gamma rays associated with ~(162,164)Gd. In both studies collective structures are seen and analyzed. Considering the phenomenon of shifted identical yrast bands in this region, we explore systematics of non-yrast bands as well. We also highlight the complementary role between the beta-decay studies and the prompt gamma-ray decay of fission fragments.
机译:〜(162-165)Gd区域中的核很好地变形,因此具有由集体模型很好地解释的激发模式。我们向两个单独的实验报告结果。首先来自橡树岭国家实验室的HRIBF设施的欧盟同位素的β-腐烂,并在低能量放射性离子束光谱站(Leribs)上测量。与此协作相关的作者显示为*。第二项研究来自〜(252)CF裂变片段的提示伽马射线排放,用γphere测量。从β-衰变实验中,我们测量了〜(162-165)欧盟的衰减。我们报告〜(162,164)GD中的集体频带结构。此外,我们提出了新的〜(162,163)欧盟半衰期的测量。在SF数据中,我们测量与〜(162,164)GD相关的伽马射线。在这两种研究中,可以看到和分析集体结构。考虑到该地区的转移相同的YRAST带的现象,我们也探讨了非YRAST带的系统。我们还突出了β衰变研究与裂变片段促进伽马射线衰变之间的互补作用。

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