A Tamii,
I Poltoratska,
P von Neumann-Cosel,
Y Fujita,
T Adachi,
C A Bertulani,
J Carter,
M Dozono, H Fujita,
K Fujita, [......],
Y Sasamoto,
Y Shimbara,
Y Shimizu,
F D Smit,
T Suzuki,
Y Tameshige,
J Wambach,
R Yamada,
M Yosoi,
J Zenihiro
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ABSTRACT: A benchmark experiment on (208)Pb shows that polarized proton inelastic scattering at very forward angles including 0° 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(-0.021)(+0.025) fm in (208)Pb 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.
Physical Review Letters 08/2011; 107(6):062502. · 7.37 Impact Factor
