Collective and single-particle structures in the neutron-rich doubly mid-shell nucleus dy
- Authors
- Söderström, P.-A.; Walker, P.M.; Wu, J.; Liu, H.L.; Regan, P.H.; Watanabe, H.; Doornenbal, P.; Korkulu, Z.; Lee, P.; Liu, J.J.; Lorusso, G.; Nishimura, S.; Phong, V.H.; Sumikama, T.; Xu, F.R.; Yagi, A.; Zhang, G.X.; Ahn, D.S.; Alharbi, T.; Baba, H.; Browne, F.; Bruce, A.M.; Carrol, R.J.; Chae, K.Y.; Dombradi, Zs.; Estrade, A.; Fukuda, N.; Griffin, C.; Ideguchil, E.; Inabe, N.; Isobe, T.; Kanaoka, H.; Kanaya, S.; Kojouharov, I.; Kondev, F.G.; Kubo, T.; Kubono, S.; Kurz, N.; Kuti, I.; Lalkovski, S.; Lane, G.J.; Lee, E.J.; Lee, C.S.; Lotay, G.; Moon, C.-B.; Nishizuka, I.; Niţǎ, C.R.; Odahara, A.; Patel, Z.; Podolyák, Zs.; Roberts, O.J.; Sakurai, H.; Schaffner, H.; Shand, C.M.; Suzuki, H.; Takeda, H.; Terashima, S.; Vajta, Zs.; Valiente-Dòbon, J.J.; Xu, Z.Y.
- Issue Date
- 2016
- Publisher
- Proceedings of Science (PoS)
- Citation
- Proceedings of Science, v.2016-September
- Journal Title
- Proceedings of Science
- Volume
- 2016-September
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/64367
- ISSN
- 1824-8039
- Abstract
- One of the most successful descriptions of the structure of atomic nuclei is the spherical shell model. It, however, becomes impractical when moving away from closed-shell nuclei. Instead, it is the interplay between the macroscopic shape degrees of freedom and the microscopic nature of the underlying single-particle structure in a deformed basis that determines the nuclear structure. Being the heaviest nucleus precisely in the middle of, known, closed proton and neutron shells, 170Dy has become a central calibration point for tests of collective models of nuclear physics. However, besides one candidate transition from a previous experiment in Legnaro, Italy, no experimental information is available for this nucleus. Using the EURICA setup at RIKEN, which couples the worlds highest intensity in-flight fission facility with a high-efficiency HPGe array, an experiment in November 2014 produced 170Dy nuclei by in-flight fission of a 238U beam. The results from this experiment provide a wealth of information on this elusive nucleus, including the evolution of quadrupole collectivity, rigidity and higher order deformations, as well as the long sought for isomeric K = 6+ state, predicted to be exceptionally pure at mid-shell. These results provide us with a rich level scheme for discussing both single-particle and collective structures at mid-shell. © Copyright owned by the author(s).
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