Electric dipole polarizability of $^{40}$Ca
Abstract
The electric dipole strength distribution in Ca 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 (Ca) = 1.92(17) fm. Together with the measured in Ca, 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 Ca and related equation of state quantities.
Keywords
Cite
@article{arxiv.2302.07490,
title = {Electric dipole polarizability of $^{40}$Ca},
author = {R. W. Fearick and P. von Neumann-Cosel and S. Bacca and J. Birkhan and F. Bonaiti and I. Brandherm and G. Hagen and H. Matsubara and W. Nazarewicz and N. Pietralla and V. Yu. Ponomarev and P. -G. Reinhard and X. Roca-Maza and A. Richter and A. Schwenk and J. Simonis and A. Tamii},
journal= {arXiv preprint arXiv:2302.07490},
year = {2024}
}
Comments
6 pages, 3 figures