Gamma Decay of the Sm 154 Isovector Giant Dipole Resonance: Smekal-Raman Scattering as a Novel Probe of Nuclear Ground-State Deformation - Kleemann, J; Pietralla, N.; Friman-Gayer, U; Isaak, J; Papst, O; Prifti, K; Werner, V; Ayangeakaa, AD; Beck, T; Colò, G; others (Physical Review Letters, 2025)