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Dipole polarizability of Sn 120 and nuclear energy density functionals

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Title
Dipole polarizability of Sn 120 and nuclear energy density functionals
Author(s)
T. Hashimoto; Krumbholz, A.M.; Reinhard, P.-G.; Tamii, A.; Von Neumann-Cosel, P.; Adachi, T.; Aoi, N.; Bertulani, C.A.; Fujita, H.; Fujita, Y.; Ganioʇlu, E.; Hatanaka, K.; Ideguchi, E.; Iwamoto, C.; Kawabata, T.; Khai, N.T.; Krugmann, A.; Martin, D.; Matsubara, H.; Miki, K.; Neveling, R.; Okamura, H.; Ong, H.J.; Poltoratska, I.; Ponomarev, V.Yu.; Richter, A.; Sakaguchi, H.; Shimbara, Y.; Shimizu, Y.; Simonis, J.; Smit, F.D.; Süsoy, G.; Suzuki, T.; Thies, J.H.; Yosoi, M.; Zenihiro, J.
Publication Date
2015-09
Journal
PHYSICAL REVIEW C, v.92, no.3, pp.031305-1 - 031305-5
Publisher
AMER PHYSICAL SOC
Abstract
The electric dipole strength distribution in Sn120 between 5 and 22 MeV has been determined at the Research Center for Nuclear Physics, Osaka, from polarization transfer observables measured in proton inelastic scattering at E0=295 MeV and forward angles including 0°. Combined with photoabsorption data, a highly precise electric dipole polarizability αD(Sn120)=8.93(36)fm3 is extracted. The dipole polarizability as isovector observable par excellence carries direct information on nuclear symmetry energy and its density dependence. The correlation of the new value with the well-established αD(Pb208) serves as a test of its prediction by nuclear energy density functionals. Models based on modern Skyrme interactions describe the data fairly well while most calculations based on relativistic Hamiltonians cannot. © 2015 American Physical Society. ©2015 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/2917
DOI
10.1103/PhysRevC.92.031305
ISSN
0556-2813
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