Electric dipole polarizability of Ca 40

R. W. Fearick, P. Von Neumann-Cosel, S. Bacca, J. Birkhan, F. Bonaiti, I. Brandherm, G. Hagen, H. Matsubara, W. Nazarewicz, N. Pietralla, V. Yu Ponomarev, P. G. Reinhard, X. Roca-Maza, A. Richter, A. Schwenk, J. Simonis, A. Tamii

研究成果: ジャーナルへの寄稿学術論文査読

1 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号L022044
ジャーナルPhysical Review Research
5
2
DOI
出版ステータス出版済み - 04-2023

All Science Journal Classification (ASJC) codes

  • 物理学および天文学一般

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