6533b7d3fe1ef96bd12608f0
RESEARCH PRODUCT
Complete Electric Dipole Response and the Neutron Skin inPb208
Achim RichterAchim RichterD. IshikawaTakayoshi SuzukiR. NevelingY. ShimizuAtsushi TamiiP. Von Neumann-coselF. D. SmitHisanori FujitaV. Yu. PonomarevH. OkamuraYoshitaka FujitaMasatoshi ItohJochen WambachK. NakanishiT. AdachiR. YamadaHiroaki MatsubaraB. ÖZel-tashenovElena LitvinovaElena LitvinovaY. TameshigeKunihiro FujitaMasanori DozonoA. M. KrumbholzCarlos A. BertulaniHooi Jin OngKichiji HatanakaJuzo ZenihiroYoshiko SasamotoY. KalmykovB. RubioTakeo KawabataYasuhiro SakemiY. ShimbaraY. ShimbaraI. PoltoratskaHarutaka SakaguchiJ. CarterM. Yosoisubject
PhysicsDipoleProtonPolarizabilityGeneral Physics and AstronomyNeutronInelastic scatteringElectric dipole transitionAtomic physicsMagnetic dipoleExcitationdescription
A benchmark experiment on Pb-208 shows that polarized proton inelastic scattering at very forward angles including 0 degrees 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 Pb-208 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-08-03 | Physical Review Letters |