Electric dipole polarizability of Ca 40

Fearick RW, Von Neumann-Cosel P, Bacca S, Birkhan J, Bonaiti F, Brandherm I, Hagen G, Matsubara H, Nazarewicz W, Pietralla N, Ponomarev VY, Reinhard PG, Roca-Maza X, Richter A, Schwenk A, Simonis J, Tamii A (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Physical Review Research American Physical Society

Book Volume: 5

Article Number: L022044

Journal Issue: 2

DOI: 10.1103/PhysRevResearch.5.L022044

Abstract

The electric dipole strength distribution in Ca40 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 αD(40Ca)=1.92(17) fm3. Together with the measured αD in Ca48, 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 Ca48 and related equation of state quantities.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

University of Cape Town (UCT)

South Africa (ZA) Technische Universität Darmstadt

Germany (DE) Johannes Gutenberg-Universität Mainz (JGU)

Germany (DE) Oak Ridge National Laboratory

United States (USA) (US) Osaka University

Japan (JP) Michigan State University

United States (USA) (US) Università degli studi di Milano

Italy (IT)

How to cite

APA:

Fearick, R.W., Von Neumann-Cosel, P., Bacca, S., Birkhan, J., Bonaiti, F., Brandherm, I.,... Tamii, A. (2023). Electric dipole polarizability of Ca 40. Physical Review Research, 5(2). https://dx.doi.org/10.1103/PhysRevResearch.5.L022044

MLA:

Fearick, R. W., et al. "Electric dipole polarizability of Ca 40." Physical Review Research 5.2 (2023).

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