Signature dependence observed for M1 transitions between rotational levels based on an f/sub 7/2/ single-particle state in /sup 163/Dy

The ground-state rotational band in /sup 163/Dy has been investigated through multiple Coulomb excitation with beams of 160-MeV /sup 35/Cl and 250-MeV /sup 58/Ni. Excited states up to (27/2)/sup -/ were established by measuring ..gamma..-..gamma.. coincidences and ..gamma..-ray angular distributions. Nuclear lifetimes for levels up to spin (23/2) have been determined by analysis of Doppler broadened ..gamma..-ray lineshapes. Considerable signature dependence was observed in M1 transition probabilities.