Spectroscopy of Neutron-Rich $^{168,170}$Dy: Yrast Band Evolution Close to the $N_{p}N_{n}$ Valence Maximum

The yrast sequence of the neutron-rich dysprosium isotope Dy-168 has been studied using multi-nucleon transfer reactions following the collision of a 460-MeV Se-82 beam and a Er-170 target. The reaction products were identified using the PRISMA magnetic spectrometer and the gamma rays detected using...

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Detalles Bibliográficos
Autores principales: Soderstrom, P.-A., Nyberg, J., Regan, P.H., Ashley, S.F., Catford, W.N., Gelletly, W., Jones, G.A., Liu, Z., Pietri, S., Podolyak, Zs., Steer, S.J., Thompson, N.J., Williams, S.J., Algora, A., de Angelis, G., Corradi, L., Fioretto, E., Gottardo, A., Grodner, E., He, C.Y., Napoli, D., Recchia, F., Sahin, E., Silvestri, R., Stefanini, A.M., Valiente-Dobon, J.J., Aydin, S., Bazzacco, D., Farnea, E., Lunardi, S., Mason, P., Menegazzo, R., Mengoni, D., Montagnoli, G., Scarlassara, F., Ur, C.A., Casperson, R.J., Werner, V., Cederkall, J., Chapman, R., Keyes, K., Labiche, M., Liang, X., Smith, J.F., Spohr, K.-M., Fahlander, C., Freeman, S.J., Gadea, A., Marginean, N., Ollier, J., Pollarolo, G., Szilner, S., Tveten, G.M., Xu, F.R., Zhu, J.Y.
Lenguaje:eng
Publicado: 2009
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.81.034310
http://cds.cern.ch/record/1209316
Descripción
Sumario:The yrast sequence of the neutron-rich dysprosium isotope Dy-168 has been studied using multi-nucleon transfer reactions following the collision of a 460-MeV Se-82 beam and a Er-170 target. The reaction products were identified using the PRISMA magnetic spectrometer and the gamma rays detected using the CLARA HPGe-detector array. The 2+ and 4+ members of the previously measured ground state rotational band of Dy-168 was confirmed and the yrast band extended up to 10+. A tentative candidate for the 4+ to 2+ transition in Dy-170 was also identified. The data on this and lighter even-even dysprosium isotopes are interpreted in terms of Total Routhian Surface calculations and the evolution of collectivity approaching the proton-neutron valence product maximum is discussed.

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