论文标题
旋转模型中$^{25} $ f的核心
The Core of $^{25}$F in the Rotational Model
论文作者
论文摘要
在最近在RIBF/RIKEN进行的实验中，$^{25} $ f $（p，2p）$$^{24} $ o反应以270 meV/a的反向运动学进行了研究。衍生的光谱因子表明，$^{25} $ f的有效核心与自由$^{24} $ o核有显着不同。我们将这些结果解释在粒子 - 连杆模型中，并表明$^{25} $ f的实验水平方案可以在旋转对齐的耦合方案中理解，其$ 5/2^+_ 1 $接地状态是脱钩频带的带状。观察到的$ 1/2_1^+$和$ 9/2_1^+$状态的激发能量与奇特质子的旋转能量密切相关，可从奇特质子上看到，并允许我们估计其$ 2^+$ Energy $ \ $ \ $ \ $ \ $ \ $ \ $ 3.2 MEV和大约倍增倍率的四倍体变形，大约0.15 $ \ 0.15 $。讨论了$πd_{5/2} $单粒子强度的测量片段化，并提出了一些进一步的实验。
In a recent experiment, carried out at RIBF/RIKEN, the $^{25}$F$(p,2p)$$^{24}$O reaction was studied at 270 MeV/A in inverse kinematics. Derived spectroscopic factors suggest that the effective core of $^{25}$F significantly differs from a free $^{24}$O nucleus. We interpret these results within the Particle-Rotor Model and show that the experimental level scheme of $^{25}$F can be understood in the rotation-aligned coupling scheme, with its $5/2^+_1$ ground state as the band-head of a decoupled band. The excitation energies of the observed $1/2_1^+$ and $9/2_1^+$ states correlate strongly with the rotational energy of the effective core, seen by the odd proton, and allow us to estimate its $2^+$ energy at $\approx$ 3.2 MeV and a moderate quadrupole deformation, $ε_2 \approx 0.15$. The measured fragmentation of the $πd_{5/2}$ single-particle strength is discussed and some further experiments suggested.
