A beam containing a substantial component of both the $J^{\pi }=5^{+}$, $T_{1/2}=162\mathrm{ns}$ isomeric state of ${}^{18}\mathrm{F}$ and its $1^{+}$, 109.77-min ground state is utilized to study members of the ground-state rotational band in ${}^{19}\mathrm{F}$ through the neutron transfer reaction ($d$,$p$) in inverse kinematics. The resulting spectroscopic strengths confirm the single-particle nature of the $13/2^{+}$ band-terminating state. The agreement between shell-model calculations using an interaction constructed within the $sd$ shell, and our experimental results reinforces the idea of a single-particle–collective duality in the descriptions of the structure of atomic nuclei.

中文翻译：

---

在F19中使用短寿命等距光束来探测旋转状态的单粒子特征

包含两者的实质成分的光束 ${Ĵ}^{\pi }=5^{+}$， ${Ť}_{\mathrm{1个}/\mathrm{2个}}=162\mathrm{ns}$ 的异构状态 ${}^{\mathrm{18岁}}\mathrm{F}$ 及其 ${\mathrm{1个}}^{+}$，109.77-min的基态被用来研究基态旋转带的成员 ${}^{19}\mathrm{F}$ 通过中子转移反应（$d$，$p$）在逆运动学中。所得的光谱强度证实了该化合物的单颗粒性质。$13/{\mathrm{2个}}^{+}$带终止状态。壳模型计算之间使用内部构造的相互作用进行构造的协议$sd$ 壳，我们的实验结果在描述原子核的结构时加强了单粒子-集合对偶性的想法。