论文标题
反转岛的边界：$^{29} $ ne中的未结合状态
Border of the Island of Inversion: Unbound states in $^{29}$Ne
论文作者
论文摘要
核$^{29} $ ne位于反转岛的边界。尽管做出了巨大的努力，但尚未观察到$^{29} $ ne将$^{29} $ ne牢固地放置在倒置岛上的情况下，尚未限制低洼的入侵者$ f_ {7/2} $ - 尚未观察到。在这里，报告了对$^{29} $ ne的未结合状态的首次调查。各州以$^{30} \ MATHRM {NE}（p，p，pn）和$^{30} \ Mathrm {Na}（na}（p，2p）$的反应约为$ 230 $ MEV/nucleon，并根据其共鸣属性和部分分析，部分分析，部分分析。将动量分布与使用Eikonal，直接反应模型的计算进行了比较，从而允许观察到的状态$ \ ell $ - 分配。以1.48（4）为1.48（4）的激发能量最低的共振显示出明显的$ \ ell $ = 3组件，提供了$ f_ {7/2} $单个粒子强度的第一个证据，以$^{29} $ ne。使用SDPF-U-MIX相互作用将观察到态的激发能和强度与壳模计算进行比较
The nucleus $^{29}$Ne is situated at the border of the island of inversion. Despite significant efforts, no bound low-lying intruder $f_{7/2}$-state, which would place $^{29}$Ne firmly inside the island of inversion, has yet been observed. Here, the first investigation of unbound states of $^{29}$Ne is reported. The states were populated in $^{30}\mathrm{Ne}(p,pn)$ and $^{30}\mathrm{Na}(p,2p)$ reactions at a beam energy of around $230$ MeV/nucleon, and analyzed in terms of their resonance properties, partial cross sections and momentum distributions. The momentum distributions are compared to calculations using the eikonal, direct reaction model, allowing $\ell$-assignments for the observed states. The lowest-lying resonance at an excitation energy of 1.48(4) MeV shows clear signs of a significant $\ell$=3-component, giving first evidence for $f_{7/2}$ single particle strength in $^{29}$Ne. The excitation energies and strengths of the observed states are compared to shell-model calculations using the sdpf-u-mix interaction
