在Ni的轨道的直接证据:对N=40的逆转岛的影响
A Ceulemans1, R Raabe1, F Nowacki2
1KU Leuven, Instituut voor Kern- en Stralingsfysica, Leuven 3001, Belgium.
Physical review letters
|January 20, 2026
概括
研究人员使用d,p反应研究了的核结构. 他们确定了关键的中子轨道,如nd_{5/2},这对于理解N=40逆转岛附近的核变形和集体性至关重要.
科学领域:
- 核物理学 核物理 核物理
- 原子和分子物理学 原子和分子物理学
背景情况:
- 形状共存是一种由单粒子动力学驱动的核结构现象.
- 中子nd_{5/2}轨道在理论上对核变形很重要,特别是在{68}Ni以下.
- 在N=40附近的富含中子同位素中对中子轨道的实验数据有限.
研究的目的:
- 研究Ni的单粒子结构.
- 在这个区域提供对中子轨道属性的实验约束.
- 澄清在核集体中nd_{5/2} 轨道的作用.
主要方法:
- ^{68}Ni(d,p) 反应是在反向动力学中进行的.
- 实验是在CERN的ISOLDE电磁光谱仪上进行的.
- 对于l值的分配,使用了亚底波扭曲波近似 (ADWA) 计算.
主要成果:
- 在Ni中观察到几种新的兴奋状态.
- 2.56 MeV的状态被确定为nd_{5/2}强度的显著片段.
- 大规模模型的计算与修改后的LNPS相互作用支持了这些发现.
结论:
- 这项研究为的核结构提供了新的见解.
- 实验证据突出显示了5/2轨道的重要性.
- 这些发现有助于理解在N=40的逆转岛上集体性的出现.
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