TY - JOUR
T1 - Electric dipole polarizability of Ca 40
AU - Fearick, R. W.
AU - Von Neumann-Cosel, P.
AU - Bacca, S.
AU - Birkhan, J.
AU - Bonaiti, F.
AU - Brandherm, I.
AU - Hagen, G.
AU - Matsubara, H.
AU - Nazarewicz, W.
AU - Pietralla, N.
AU - Ponomarev, V. Yu
AU - Reinhard, P. G.
AU - Roca-Maza, X.
AU - Richter, A.
AU - Schwenk, A.
AU - Simonis, J.
AU - Tamii, A.
N1 - Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2023/4
Y1 - 2023/4
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevResearch.5.L022044
DO - 10.1103/PhysRevResearch.5.L022044
M3 - Article
AN - SCOPUS:85163432973
SN - 2643-1564
VL - 5
JO - Physical Review Research
JF - Physical Review Research
IS - 2
M1 - L022044
ER -