Discrete and Total Absorption Spectroscopy of 𝛽-decaying nuclei near N = 34 at the FDSi

Precise measurements of 𝛽-decay properties of neutron-rich nuclei can serve as sensitive probes into the observed structural changes that emerge from complex interactions between protons and neutrons. These properties are also important constraints for Urca cooling luminosity in the modeling of accreting neutron stars. During FRIB experiments E21069A and E21069B, cocktail secondary beams of neutron-rich nuclei near ⁵⁴Ca were delivered to the FDSi. I will highlight key findings relevant to nuclear structure and astrophysics questions sought to be addressed by these experiments, in light of the measurement of 15 new half-lives of isotopes near ⁵⁴Ca, the identification of a new nanosecond isomer in ⁵⁴Sc, populated in the decay of ⁵⁴Ca, and the reconstruction of the 𝛽-feeding to levels in ⁵⁷Ti following ⁵⁷Sc decay.