Spectroscopy of \textsuperscript{87}\text{Sr} triplet Rydberg states*

Quantum statistics play an important role in defining the properties of ultracold gases with strontium being particularly attractive as it posses both bosonic (\textsuperscript{84, 86, 88}\text{Sr} with $I = 0$) and fermionic (\textsuperscript{87}\text{Sr} with $I = 9/2$) isotopes. These effects can be probed with Rydberg states which offer a tunable length scale defined by the size of the Rydberg atom. Crucial to studies involving \textsuperscript{87}\text{Sr} is the ability to excite to well-defined Rydberg states which requires a detailed understanding of the excitation spectrum. In \textsuperscript{87}\text{Sr}, the spectrum is complicated by the presence of strong hyperfine interactions, resulting in a complex series of lines that is challenging to interpret. We present a combined experimental and theoretical characterization of the $\textsuperscript{3}\text{S}\textsubscript{}$ and $\textsuperscript{3}\text{D}\textsubscript{}$ Rydberg series of \textsuperscript{87}\text{Sr} in the range $n \sim 38-99$.