Spectroscopy of neutron-rich Dy168,170: Yrast band evolution close to the NpNn valence maximum

P. A. Söderström, J. Nyberg, P. H. Regan, A. Algora, G. De Angelis, S. F. Ashley, S. Aydin, D. Bazzacco, R. J. Casperson, W. N. Catford, J. Cederkäll, R. Chapman, L. Corradi, C. Fahlander, E. Farnea, E. Fioretto, S. J. Freeman, A. Gadea, W. Gelletly, A. GottardoE. Grodner, C. Y. He, G. A. Jones, K. Keyes, M. Labiche, X. Liang, Z. Liu, S. Lunardi, N. Mǎrginean, P. Mason, R. Menegazzo, D. Mengoni, G. Montagnoli, D. Napoli, J. Ollier, S. Pietri, Zs Podolyák, G. Pollarolo, F. Recchia, E. Şahin, F. Scarlassara, R. Silvestri, J. F. Smith, K. M. Spohr, S. J. Steer, A. M. Stefanini, S. Szilner, N. J. Thompson, G. M. Tveten, C. A. Ur, J. J. Valiente-Dobón, V. Werner, S. J. Williams, F. R. Xu, J. Y. Zhu

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Abstract

The yrast sequence of the neutron-rich dysprosium isotope Dy168 has been studied using multinucleon transfer reactions following collisions between a 460-MeV Se82 beam and an Er170 target. The reaction products were identified using the PRISMA magnetic spectrometer and the γ rays detected using the CLARA HPGe-detector array. The 2+ and 4+ members of the previously measured ground-state rotational band of Dy168 have been confirmed and the yrast band extended up to 10+. A tentative candidate for the 4+→2+ transition in Dy170 was also identified. The data on these nuclei and on the lighter even-even dysprosium isotopes are interpreted in terms of total Routhian surface calculations and the evolution of collectivity in the vicinity of the proton-neutron valence product maximum is discussed.

Original languageEnglish
Article number034310
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number3
DOIs
Publication statusPublished - Mar 22 2010

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Söderström, P. A., Nyberg, J., Regan, P. H., Algora, A., De Angelis, G., Ashley, S. F., Aydin, S., Bazzacco, D., Casperson, R. J., Catford, W. N., Cederkäll, J., Chapman, R., Corradi, L., Fahlander, C., Farnea, E., Fioretto, E., Freeman, S. J., Gadea, A., Gelletly, W., ... Zhu, J. Y. (2010). Spectroscopy of neutron-rich Dy168,170: Yrast band evolution close to the NpNn valence maximum. Physical Review C - Nuclear Physics, 81(3), [034310]. https://doi.org/10.1103/PhysRevC.81.034310