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Electric dipole polarizability of Ni 58

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The electric dipole strength distribution in 58Ni between 6 and 20 MeV has been determined from proton inelastic scattering experiments at very forward angles at RCNP, Osaka. The experimental data are rather well reproduced by quasiparticle random-phase approximation calculations including vibration coupling, despite a mild dependence on the adopted Skyrme interaction. They allow an estimate of the experimentally inaccessible high-energy contribution above 20 MeV, leading to an electric dipole polarizability D⁡(58Ni)=3.48⁢(31)⁢fm3. This serves as a test case for recent extensions of coupled-cluster calculations with chiral effective field theory interactions to nuclei with two nucleons on top of a closed-shell system.

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BRANDHERM, Isabelle, et al. Electric dipole polarizability of Ni 58. Physical Review C. 2025. Vol. 111, num. 2. ISSN 2469-9985. [consulted: 13 of July of 2026]. Available at: https://hdl.handle.net/2445/221877

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