Complete Electric Dipole Response and the Neutron Skin in 208Pb

被引:450
|
作者
Tamii, A. [1 ]
Poltoratska, I. [2 ]
von Neumann-Cosel, P. [2 ]
Fujita, Y. [3 ]
Adachi, T. [3 ,4 ]
Bertulani, C. A. [5 ]
Carter, J. [6 ]
Dozono, M. [7 ]
Fujita, H. [1 ]
Fujita, K. [7 ]
Hatanaka, K. [1 ]
Ishikawa, D. [1 ]
Itoh, M. [8 ]
Kawabata, T. [9 ]
Kalmykov, Y. [2 ]
Krumbholz, A. M. [2 ]
Litvinova, E. [10 ,11 ]
Matsubara, H. [12 ]
Nakanishi, K. [12 ]
Neveling, R. [13 ]
Okamura, H. [1 ]
Ong, H. J. [1 ]
Oezel-Tashenov, B. [10 ]
Ponomarev, V. Yu. [2 ]
Richter, A. [2 ,14 ]
Rubio, B. [15 ]
Sakaguchi, H. [1 ]
Sakemi, Y. [8 ]
Sasamoto, Y. [12 ]
Shimbara, Y. [3 ,16 ]
Shimizu, Y. [17 ]
Smit, F. D. [13 ]
Suzuki, T. [1 ]
Tameshige, Y. [18 ]
Wambach, J. [2 ]
Yamada, R. [16 ]
Yosoi, M. [1 ]
Zenihiro, J. [1 ]
机构
[1] Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan
[2] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
[3] Osaka Univ, Dept Phys, Osaka 5600043, Japan
[4] Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands
[5] Texas A&M Univ, Dept Phys & Astron, Commerce, TX 75429 USA
[6] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa
[7] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan
[8] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 9808578, Japan
[9] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[10] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany
[11] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany
[12] Univ Tokyo, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[13] iThemba LABS, ZA-7129 Somerset W, South Africa
[14] ECT, I-38123 Villazzano, Trento, Italy
[15] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46071 Valencia, Spain
[16] Niigata Univ, Dept Phys, Niigata 9502102, Japan
[17] RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan
[18] Natl Inst Radiol Sci, Chiba 2638555, Japan
关键词
POLARIZATION TRANSFER; NUCLEI; EXCITATIONS; SCATTERING; RESONANCE; MODES;
D O I
10.1103/PhysRevLett.107.062502
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
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页数:5
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