Vaquero, V.Jungclaus, A.Aumann, T.Martel Bravo, Ismael2020-03-202020-03-202020-01Vaquero, V., Jungclaus, A., Aumann, T., ... Martel Bravo, I. (2020). Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus Sn132 and the Position of the 0f5/2 Proton-Hole State in In131. Physical Review Letters, 124(2). DOI: https://doi.org/10.1103/physrevlett.124.0225010031-9007http://hdl.handle.net/10272/17613Spectroscopic factors of neutron-hole and proton-hole states in 131Sn and 131In, respectively, were measured using one-nucleon removal reactions from doubly-magic 132Sn at relativistic energies. For 131In, a 2910(50)-keV γ ray was observed for the first time and tentatively assigned to a decay from a 5/2− state at 3275(50) keV to the known 1/2− level at 365 keV. The spectroscopic factors determined for this new excited state and three other single-hole states provide first evidence for a strong fragmentation of single-hole strength in 131Sn and 131In. The experimental results are compared to theoretical calculations based on the relativistic particle-vibration coupling model and to experimental information for single-hole states in the stable doubly-magic nucleus 208Pb.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Single-particle strengthDoubly-magic nucleus0f5/2 proton-holejournal article10.1103/PhysRevLett.124.022501open access