Abstract
Yrast levels in the backbending region of 158Dy were Coulomb excited with a 4.7 MeV/u 208Pb beam. Employing the transient field technique with a thin magnetized iron foil, the precessions of the angular correlations of decay γ-rays from levels up to spin I π = 16 + were measured. The results show a clear reduction of the g-factor for states in the backbending region relative to that of the low-spin levels, thus demonstrating that the backbending in 158Dy is mainly caused by the alignment of i 13 2 neutrons. In a similar experiment, precession measurements on Coulomb excited low-spin levels of 164Dy served to determine the static hyperfine field of Dy in Fe and the g-factor of the 6 + state in 164Dy.
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