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Collective And Single-particle Structures In The Neutron-rich Doubly Mid-shell Nucleus 170Dy

Söderström, P.-A., Walker, Philip, Wu, J., Liu, H. L., Regan, Patrick, 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., Carroll, R. J., Chae, K. Y., Dombradi, Zs., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, 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., G. Lotay, G., Moon, C.-B., Nishizuka, I., Nita, C. R., Odahara, A., Patel, Z., Podolyak, Zsolt, Roberts, O. J., Sakurai, H., Schaffner, H., Shand, C. M., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Valiente-Dòbon, J. J. and Xui, Z. Y. (2016) Collective And Single-particle Structures In The Neutron-rich Doubly Mid-shell Nucleus 170Dy In: The 26th International Nuclear Physics Conference (INPC2016), 11-16 Sep 2016, Adelaide, Australia.

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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.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Söderström, P.-A.
Walker, PhilipP.Walker@surrey.ac.uk
Wu, J.
Liu, H. L.
Regan, PatrickP.Regan@surrey.ac.uk
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.
Carroll, R. J.
Chae, K. Y.
Dombradi, Zs.
Estrade, A.
Fukuda, N.
Griffin, C.
Ideguchi, 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.
G. Lotay, G.
Moon, C.-B.
Nishizuka, I.
Nita, C. R.
Odahara, A.
Patel, Z.
Podolyak, ZsoltZ.Podolyak@surrey.ac.uk
Roberts, O. J.
Sakurai, H.
Schaffner, H.
Shand, C. M.
Suzuki, H.
Takeda, H.
Terashima, S.
Vajta, Zs.
Valiente-Dòbon, J. J.
Xui, Z. Y.
Date : 11 September 2016
Copyright Disclaimer : © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
Depositing User : Clive Harris
Date Deposited : 08 Jun 2017 15:18
Last Modified : 08 Jun 2017 15:18
URI: http://epubs.surrey.ac.uk/id/eprint/841340

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