Excited bands and signature dependent electromagnetic decay properties in neutron - rich

High-spin states of the neutron-rich odd nuclei Dy have been studied using the incomplete fusion reactions Gd( Li,(p ,d ,t)xn). In Dy, the band crossing in the 11/2@505# band has been observed for the first time. Moreover, 11 E1 transitions connecting both signatures of the 3/2@521# band to the 5/2@642# band have been observed in this nucleus; the deduced B(E1)/B(E2) ratios as well as the B(M1)/B(E2) ratios for transitions within the 3/2@521# band show a pronounced signature dependence. In Dy and Dy, rotational bands have been extended to significantly higher spin values. In Dy, the sequences built on the neutron 5/2@523# and 3/2@521# states have been followed up to spin 49/2 and 33/2, respectively, and in both cases upbends have been observed around \v'0.26 MeV. In addition, a new band most probably built on the 11/2@505# single-particle state has been identified in this isotope. In Dy, both the 5/2@523# ground state band and the structure built on the 5/2@642# neutron orbit have been extended up to the 45/2 and 49/2 states, respectively. However, no band crossing has been observed in this nucleus. The properties of the observed bands in Dy are discussed and compared to calculations performed within the projected shell model.