Laser Spectroscopy of Proton-Halo Candidates in Neutron-Deficient Aluminum using the RISE Instrument at BECOLA/FRIB*

In this talk, I will present commissioning and first physics results from the Resonant Ionization Spectroscopy Experiment (RISE), recently developed at the BEam COoler LAser spectroscopy facility (BECOLA), at the Facility for Rare Isotope Beams (FRIB), at Michigan State University.

Measurements of the hyperfine spectra of the 3p ²P_1/2 → 5s ²S_1/2 atomic transition in ^{22,23,24,24m,25}Al were obtained, allowing – for the first time – a charge radius extraction of aluminum isotopes all the way to the proton dripline. The preliminary results from the isotope shift analysis of these neutron-deficient aluminum isotopes and their implications for our understanding of the nuclear structure in the region will be discussed, including the proposed proton-halo candidates ^22,23Al.