Electric dipole polarizability of <sup>40</sup>Ca

The electric dipole strength distribution in 40Ca between 5 and 25 MeV has been determined at RCNP, Osaka, from proton inelastic scattering experiments at very forward angles. Combined with total photoabsorption data at higher excitation energy, this enables an extraction of the electric dipole pola...

Descripción completa

Detalles Bibliográficos
Autores: Fearick, R. W., Neumann-Cosel, P. von, Bacca, S., Birkhan, J., Bonaiti, F., Brandherm, I., Hagen, G., Matsubara, H., Nazarewicz, W., Pietralla, N., Ponomarev, V. Yu., Reinhard, P.-G., Roca Maza, Xavier, Richter, A., Schwenk, A., Simonis, J., Tamii, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/218761
Acceso en línea:https://hdl.handle.net/2445/218761
Access Level:acceso abierto
Palabra clave:Estructura nuclear
Teoria del funcional de densitat
Reaccions nuclears
Nuclear structure
Density functionals
Nuclear reactions
Descripción
Sumario:The electric dipole strength distribution in 40Ca between 5 and 25 MeV has been determined at RCNP, Osaka, from proton inelastic scattering experiments at very forward angles. Combined with total photoabsorption data at higher excitation energy, this enables an extraction of the electric dipole polarizability ⁢(40Ca)=1.92⁢(17) fm3. Together with the measured in 48Ca, it provides a stringent test of modern theoretical approaches, including coupled-cluster calculations with chiral effective field theory interactions and state-of-the art energy density functionals. The emerging picture is that for this medium-mass region dipole polarizabilities are well described theoretically, with important constraints for the neutron skin in 48Ca and related equation of state quantities.

Similares en LA Referencia