标题： 双集团方法研究单中子和双中子晕核的性质 显示英文标题

标题： Two-cluster approach to the properties of one- and two-neutron-halo nuclei

摘要： 在这项工作中，我们提出了一种新的近似方法，用于获得具有中子晕的奇异核基态的简单波函数。我们将该系统建模为一个两簇结构，将核心和晕层视为惰性物体。相对波函数被表示为谐振子态的组合，其中振荡参数由分离能确定。由于这些波函数缺乏预期的指数衰减，我们引入了一个基于核均方根半径的简单乘法重整化因子。这种方法结合了振荡器波函数和重整化因子，然后应用于计算几个 $1n$- 和 $2n$-晕核的电偶极跃迁强度分布 $dB(E1,\varepsilon)/d\varepsilon$ 和库仑分解截面 $d\sigma(E1,\varepsilon)/d\varepsilon$。结果显示与现有的实验数据非常吻合。 显示英文摘要

摘要： In this work, we present a new approximate method for obtaining simple wave functions for the ground state of exotic nuclei with a neutron halo. We model the system as a two-cluster structure, treating the core and halo as inert objects. The relative wave function is expressed as a combination of simple harmonic oscillator states, with the oscillator parameter determined from the separation energy. Since these wave functions lack the expected exponential decay, we introduce a simple multiplicative renormalization factor based on the nuclear root mean square radius. This approach, combining oscillator wave functions and the renormalization factor, is then applied to calculate dipole strength distributions $dB(E1,\varepsilon)/d\varepsilon$ and Coulomb dissociation cross section $d\sigma(E1,\varepsilon)/d\varepsilon$ for several $1n$- and $2n$-halo nuclei. The results show excellent agreement with the available experimental data.