The Structure of 9Be Nucleus by a Molecular Model. I
The Structure of 9Be Nucleus by a Molecular Model. I
复制标题
通过分子模型研究 9Be 核的结构。
DOI：
10.1143/ptp.57.866
复制
发表时间：
1977
影响因子：
--
通讯作者：
Hajime Tanaka
中科院分区：
文献类型：
--
作者：
S. Okabe;Y. Abe;Hajime Tanaka
用扩展的分子轨道模型和生成坐标方法在简单LCAO近似下研究了9 Be核。Hartree-Fock计算表明，α团簇结构在本征态下是稳定的，团簇的程度主要取决于价中子的运动。生成坐标计算很好地描述了正常和非正常宇称态的能级结构。给出了~ 9 B的能谱。还预测了AKπ=1/2带。基态性质，即均方根值-半径、Q矩和μ矩以及基态转动带成员的电跃迁和电荷形状因子。结果表明，分子模型成功地系统地解释了9 Be的低能性质。与简单的壳模型和投影Hartree-Fock计算Bouten等人进行了比较。
The nucleus9Be is investigated by an extended molecular-orbital model and by the generator coordinate method in the simple LCAO approximation. The Hartree-Fock calculations show that α-cluster structures are stable in intrinsic states and the degree of clustering depends crucially on motions of the valence neutron. The generator coordinate calculations give good descriptions of the energy level structures of normal and non-normal parity states in terms of rotational bands. Energy spectra of9B are given as well. AKπ=1/2-band is also predicted. The ground state properties, that is, r.m.s.-radius,Q-moment and µ-moment are reproduced as quite well as electric transitions and charge form factors for the members of the ground rotational band. It is concluded that the molecular model admirably succeeds in systematic explanation of the low energy properties of9Be. Comparisons are made with the simple shell model and the projected Hartree-Fock calculation by Bouten et al.