Complete Electric Dipole Response and the Neutron Skin in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Pb</mml:mi><mml:mprescripts/><mml:none/><mml:mn>208</mml:mn></mml:mmultiscripts></mml:math>
A. TamiiResearch Center for Nuclear Physics, Osaka University, Ibaraki, JapanI. PoltoratskaTechnische Universität DarmstadtP. von Neumann–CoselTechnische Universität DarmstadtY. FujitaOsaka UniversityT. AdachiOsaka UniversityC. A. BertulaniTexas A&M University-CommerceJ. Carteruniversity of the WitwatersrandM. DozonoKyushu UniversityH. FujitaOsaka UniversityK. FujitaKyushu UniversityK. HatanakaOsaka UniversityD. IshikawaOsaka UniversityMitsuru ItohTohoku Univ.#TAB#T. KawabataKyoto univY. KalmykovTechnische Universität DarmstadtA. M. KrumbholzTechnische Universität DarmstadtЕлена ЛитвиноваGSI Helmholtz Centre for Heavy Ion ResearchHiroaki MatsubaraThe University of TokyoK. NakanishiThe University of TokyoR. NevelingiThemba Laboratory for Accelerator Based SciencesH. OkamuraOsaka UniversityH. J. OngOsaka UniversityB. Özel-TashenovGSI Helmholtz Centre for Heavy Ion ResearchV. Yu. PonomarevTechnische Universität DarmstadtA. RichterFondazione Bruno KesslerB. RubioUniversity of ValenciaH. SakaguchiOsaka UniversityY. SakemiTohoku Univ.#TAB#Y. SasamotoThe University of TokyoY. ShimbaraOsaka UniversityY. ShimizuRIKENF. D. SmitiThemba Laboratory for Accelerator Based SciencesT. SuzukiOsaka UniversityY. Tameshige***National Institute of Radiological Sciences, ChibaJ. WambachTechnische Universität DarmstadtRyuta YamadaM. YosoiOsaka UniversityJ. ZenihiroOsaka University
2011lv
ABI
Аннотация
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.
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