Detailed View at Magnetic Dipole Strengths: The Case of Semimagic
Phys. Rev. Lett. 136, 082502 – Published 24 February, 2026
DOI: https://doi.org/10.1103/82y9-svrd
Abstract
Magnetic dipole, , strengths were studied in semimagic up to the neutron-separation threshold by combining data from one-neutron transfer, real-photon scattering, inelastic scattering at extreme backward angles, and at and extreme forward angles. The combination of all probes provided unique access to the neutron spin-flip contribution and the possibility to evaluate its role in generating the spin-flip strengths. The small contribution of the neutron spin-flip transitions, which were probed with the reaction, to the overall strength in questions the standard picture for the microscopic origin of spin-flip strength in the shell. For , this Letter shows that states with larger neutron spectroscopic factors do not correspond to the ones with the largest strengths.