抄録
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.
本文言語 | 英語 |
---|---|
論文番号 | 031305 |
ジャーナル | Physical Review C - Nuclear Physics |
巻 | 92 |
号 | 3 |
DOI | |
出版ステータス | 出版済み - 28-09-2015 |
外部発表 | はい |
All Science Journal Classification (ASJC) codes
- 核物理学および高エネルギー物理学