RT Journal Article T1 Fragmentation of single-particle strength around the doubly-magic nucleus 132Sn and the position of the 0f5/2 proton-hole state in 131In A1 Vaquero, V. A1 Jungclaus, A. A1 Aumann, T. A1 Martel Bravo, Ismael AB Spectroscopic factors of neutron-hole and proton-hole states in 131Sn and 131In, respectively, weremeasured using one-nucleon removal reactions from doubly-magic 132Sn at relativistic energies. For131In, a 2910(50)-keV γ ray was observed for the first time and tentatively assigned to a decayfrom a 5/2− state at 3275(50) keV to the known 1/2− level at 365 keV. The spectroscopic factorsdetermined for this new excited state and three other single-hole states provide first evidence fora strong fragmentation of single-hole strength in 131Sn and 131In. The experimental results arecompared to theoretical calculations based on the relativistic particle-vibration coupling model andto experimental information for single-hole states in the stable doubly-magic nucleus 208Pb. PB American Physical Society SN 0031-9007 YR 2020 FD 2020-01 LK http://hdl.handle.net/10272/17613 UL http://hdl.handle.net/10272/17613 LA eng NO Vaquero, 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.124.022501 DS Repositorio Institucional de la Universidad de Huelva RD 28 may 2026