Shedding Light on the Doubly Magic Character of ¹⁰⁰Sn (N=Z=50)

This talk highlights recent results in the direct vicinity of ¹⁰⁰Sn. Applying precision laser spectroscopy to neutron-deficient indium (Z=49) isotopes at the CRIS experiment at CERN/ISOLDE, we were able to study the evolution of nuclear deformation across the indium isotopic chain and shed light on the doubly magic character of ¹⁰⁰Sn (N=Z=50) [1]. The impact of these measurements is discussed by comparing our results to state-of-the-art density-functional and ab initio nuclear theory approaches.