Published in
American Physical Society, Physical Review C, 3(81)
DOI: 10.1103/physrevc.81.034310
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Spectroscopy of neutron-richDy168,170: Yrast band evolution close to theNpNnvalence maximum
,
D. Bazzacco,
R. J. Casperson,
W. N. Catford,
J. Cederkäll,
R. Chapman,
L. Corradi,
C. Fahlander,
E. Farnea
and other authors.
Full text: Download
Abstract
The yrast sequence of the neutron-rich dysprosium isotope 168Dy has been studied using multi-nucleon transfer reactions following collisions between a 460-MeV 82Se beam and a 170Er 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 168Dy have been confirmed and the yrast band extended up to 10+. A tentative candidate for the 4+ to 2+ transition in 170Dy 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. Comment: 15 pages, 7 figures, submitted to Phys. Rev. C