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arXiv 0909.2218nucl-th
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反对称分子动力学框架下的四极形变$β$和$γ$约束

Quadrupole Deformation $β$ and $γ$ Constraint in a Framework of Antisymmetrized Molecular Dynamics

Tadahiro Suhara, Yoshiko Kanada-En'yo

摘要:

提出了反对称分子动力学(AMD)中四极形变的$β$约束方法,用于描述轻核基态和激发态的各种团簇和壳模型结构.我们将这种方法应用于N=6的同位素,$^{10}$ Be,$^{12}$ C,$^{9}$ Li,和$^{11}$ B,并找到各种结构的变形参数,$β$和$γ$的函数。在这些核中,壳模型样结构出现在小$β$区域,而簇结构发展良好,在大$β$区域,根据$γ$参数获得各种几何构型的簇。对于$^{10}$ Be和$^{12}$ C,我们将由$β$ - $γ$约束方法得到的基AMD波函数叠加起来计算能谱,证明了在AMD框架下二维$β$ - $γ$约束方法的优越性.

英文摘要:

We propose a new method of the $β$-$γ$ constraint for quadrupole deformation in antisymmetrized molecular dynamics (AMD) to describe various cluster and shell-model structures in the ground and excited states of light nuclei. We apply this method to N=6 isotones, $^{10}$Be, $^{12}$C, $^{9}$Li, and $^{11}$B, and find various structures as functions of the deformation parameters, $β$ and $γ$. In these nuclei, shell-model-like structures appear in the small $β$ region, while cluster structures develop well in the large $β$ region where various geometric configurations of clusters are obtained depending on the $γ$ parameter. For $^{10}$Be and $^{12}$C, we superpose the basis AMD wave functions obtained by the $β$-$γ$ constraint method to calculate energy spectra, and prove the advantages of the present method of the two-dimensional $β$-$γ$ constraint in the framework of AMD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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