Complete electric dipole response and the neutron skin in 208Pb
Nuclear Experiment
2011-08-22 v2 Nuclear Theory
Abstract
A benchmark experiment on 208Pb shows that polarized proton inelastic scattering at very forward angles including 0{\deg} is a powerful tool for high-resolution studies of electric dipole (E1) and spin magnetic dipole (M1) modes in nuclei over a broad excitation energy range to test up-to-date nuclear models. The extracted E1 polarizability leads to a neutron skin thickness r_skin = 0.156+0.025-0.021 fm in 208Pb derived within a mean-field model [Phys. Rev. C 81, 051303 (2010)], thereby constraining the symmetry energy and its density dependence, relevant to the description of neutron stars.
Keywords
Cite
@article{arxiv.1104.5431,
title = {Complete electric dipole response and the neutron skin in 208Pb},
author = {A. Tamii and I. Poltoratska and P. von Neumann-Cosel and Y. Fujita and T. Adachi and C. A. Bertulani and J. Carter and M. Dozono and H. Fujita and K. Fujita and K. Hatanaka and A. M. Heilmann and D. Ishikawa and M. Itoh and H. J. Ong and T. Kawabata and Y. Kalmykov and E. Litvinova and H. Matsubara and K. Nakanishi and R. Neveling and H. Okamura and B. Özel-Tashenov and V. Yu. Ponomarev and A. Richter and B. Rubio and H. Sakaguchi and Y. Sakemi and Y. Sasamoto and Y. Shimbara and Y. Shimizu and F. D. Smit and T. Suzuki and Y. Tameshige and J. Wambach and R. Yamada and M. Yosoi and J. Zenihiro},
journal= {arXiv preprint arXiv:1104.5431},
year = {2011}
}
Comments
5 pages, 5 figures, revised mansucript