Journal
PHYSICAL REVIEW C
Volume 92, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.92.031305
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Funding
- JSPS [25105509]
- DFG [SFB 634, NE 679/3-1]
- BMBF [05P12RFFTG]
- NAFOSTED of Vietnam [103.01-2011.17]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1415656] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [25105509, 24654066, 24105004, 23224008, 15K05104] Funding Source: KAKEN
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The electric dipole strength distribution in Sn-120 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 E-0 = 295 MeV and forward angles including 0 degrees. Combined with photoabsorption data, a highly precise electric dipole polarizability alpha(D)(Sn-120) = 8.93(36) fm(3) 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 alpha(D)(Pb-208) 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.
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