Deformation-Driven p-Wave Halos at the Drip Line: Ne-31

作者：Nakamura T^*; Kobayashi N; Kondo Y; Satou Y; Tostevin J A; Utsuno Y; Aoi N; Baba H; Fukuda N; Gibelin J; Inabe N; Ishihara M; Kameda D; Kubo T; Motobayashi T; Ohnishi T; Orr N A; Otsu H; Otsuka T; Sakurai H; Sumikama T; Takeda H; Takeshita E; Takechi M; Takeuchi S; Togano Y; Yoneda K

来源：Physical Review Letters, 2014, 112(14): 142501.

DOI：10.1103/PhysRevLett.112.142501

The halo structure of Ne-31 is studied using 1n-removal reactions on C and Pb targets at 230 MeV/nucleon. A combined analysis of the cross sections of these nuclear and Coulomb dominated reactions that feed directly the Ne-30 ground-state reveals Ne-31 to have a small neutron separation energy, 0.15(-0.10)(+0.16) MeV, and spin-parity 3/2(-). Consistency of the data with reaction and large-scale shell-model calculations identifies Ne-31 as deformed and having a significant p-wave halo component, suggesting that halos are more frequent occurrences at the neutron drip line.

• 出版日期2014-4-7