Dipole polarizability of 120Sn and nuclear energy density functionals
Abstract
The electric dipole strength distribution in 120Sn between 5 and 22 MeV has been determined at RCNP Osaka from a polarization transfer analysis of proton inelastic scattering at E_0 = 295 MeV and forward angles including 0{\deg}. Combined with photoabsorption data an electric dipole polarizability \alpha_D(120Sn) = 8.93(36) fm^3 is extracted. The dipole polarizability as isovector observable par excellence carries direct information on the nuclear symmetry energy and its density dependence. The correlation of the new value with the well established \alpha_D(208Pb) serves as a test of its prediction by nuclear energy density functionals (EDFs). Models based on modern Skyrme interactions describe the data fairly well while most calculations based on relativistic Hamiltonians cannot.
Cite
@article{arxiv.1503.08321,
title = {Dipole polarizability of 120Sn and nuclear energy density functionals},
author = {T. Hashimoto and A. M. Krumbholz and P. -G. Reinhard and A. Tamii and P. von Neumann-Cosel and T. Adachi and N. Aoi and C. A. Bertulani and H. Fujita and Y. Fujita and E. Ganioǧlu and K. Hatanaka and C. Iwamoto and T. Kawabata and N. T. Khai and A. Krugmann and D. Martin and H. Matsubara and K. Miki and R. Neveling and H. Okamura and H. J. Ong and I. Poltoratska and V. Yu. Ponomarev and A. Richter and H. Sakaguchi and Y. Shimbara and Y. Shimizu and J. Simonis and F. D. Smit and G. Süsoy and J. H. Thies and T. Suzuki and M. Yosoi and J. Zenihiro},
journal= {arXiv preprint arXiv:1503.08321},
year = {2015}
}
Comments
6 pages, 4 figures