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Complete electric dipole response and the neutron skin in 208Pb.

Authors :
Tamii A
Poltoratska I
von Neumann-Cosel P
Fujita Y
Adachi T
Bertulani CA
Carter J
Dozono M
Fujita H
Fujita K
Hatanaka K
Ishikawa D
Itoh M
Kawabata T
Kalmykov Y
Krumbholz AM
Litvinova E
Matsubara H
Nakanishi K
Neveling R
Okamura H
Ong HJ
Ozel-Tashenov B
Ponomarev VY
Richter A
Rubio B
Sakaguchi H
Sakemi Y
Sasamoto Y
Shimbara Y
Shimizu Y
Smit FD
Suzuki T
Tameshige Y
Wambach J
Yamada R
Yosoi M
Zenihiro J
Source :
Physical review letters [Phys Rev Lett] 2011 Aug 05; Vol. 107 (6), pp. 062502. Date of Electronic Publication: 2011 Aug 03.
Publication Year :
2011

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.

Details

Language :
English
ISSN :
1079-7114
Volume :
107
Issue :
6
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
21902316
Full Text :
https://doi.org/10.1103/PhysRevLett.107.062502