发表机构
Institut für Kernphysik, Technische Universität Darmstadt; Helmholtz Research Academy Hesse for FAIR, GSI Helmholtzzentrum für Schwerionenforschung; Institute for Nuclear and Radiation Physics, KU Leuven（达姆施塔特工业大学核物理研究所; 黑森州FAIR亥姆霍兹研究院，GSI重离子研究中心; 荷语鲁汶大学核与辐射物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文演示了快速离子束中偶极禁戒跃迁的受激拉曼光谱，应用于锶-88钟跃迁及精细结构分裂测量，为短寿命同位素的高精度共线激光光谱开辟了新路径。
AI 中文摘要
我们在快速离子束中演示了偶极禁戒精细结构跃迁的受激拉曼光谱。该方法应用于$^{88}\mathrm{Sr}^{+}$的$\mathrm{S}_{1/2}\rightarrow\mathrm{D}_{5/2}$钟跃迁，并结合随后的E1跃迁，使其能够通过标准荧光检测进行探测。在此基础上，利用包含两次连续拉曼跃迁的多普勒无消隐方案，直接测量了$\mathrm{D}_{3/2}\rightarrow\mathrm{D}_{5/2}$精细结构分裂。这些测量展示了一条通往短寿命同位素上窄跃迁的高精度共线激光光谱的路径，超越了传统电偶极光谱的线宽限制，可用于探索原子和核物理的基本方面。
英文摘要
We demonstrate stimulated Raman spectroscopy on dipole-forbidden fine-structure transitions in a fast ion beam. It is applied to the $\mathrm{S}_{1/2}\rightarrow\mathrm{D}_{5/2}$ clock transition in $^{88}\mathrm{Sr}^{+}$ and combined with a subsequent E1 transition to allow for its detection by standard fluorescence detection. Building on this, the $\mathrm{D}_{3/2}\rightarrow\mathrm{D}_{5/2}$ fine-structure splitting is measured directly using a Doppler-free scheme employing two subsequent Raman transitions. These measurements demonstrate a path toward precision collinear laser spectroscopy of narrow transitions on short-lived isotopes beyond the linewidth limit of conventional electric-dipole spectroscopy, which can be used to probe fundamental aspects of atomic and nuclear physics.
