抄録
A set of high-resolution zero-degree inelastic proton scattering data on Mg24, Si28, S32, and Ca40 provides new insight into the long-standing puzzle of the origin of fragmentation of the giant dipole resonance (GDR) in sd-shell nuclei. Understanding is achieved by comparison with random phase approximation calculations for deformed nuclei using for the first time a realistic nucleon-nucleon interaction derived from the Argonne V18 potential with the unitary correlation operator method and supplemented by a phenomenological three-nucleon contact interaction. A wavelet analysis allows one to extract significant scales both in the data and calculations characterizing the fine structure of the GDR. The fair agreement for scales in the range of a few hundred keV supports the surmise that the fine structure arises from ground-state deformation driven by α clustering.
本文言語 | 英語 |
---|---|
論文番号 | 044325 |
ジャーナル | Physical Review C |
巻 | 97 |
号 | 4 |
DOI | |
出版ステータス | 出版済み - 30-04-2018 |
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