LOW-LYING SPECTRA AND ELECTROMAGNETIC-TRANSITIONS FOR DY-164, ER-166, AND YB-168 NUCLEI

Low-lying spectra of Dy164, Er166, and Yb168 are studied in the framework of the pseudo SU(3) model allowing natural parity neutrons alone to be active. Various interband and intraband B(E2) values are predicted and compared with experimental results and other model calculations. The agreement is quite reasonable. We predict a different level structure for the 2+ quasirotational band in Dy164 and 3+ quasirotational band in Yb168. The present calculation shows that the enlargement of the natural parity neutron space will improve the predictions considerably. NUCLEAR STRUCTURE Dy164, Er166, Yb168, Pseudo SU(3) model, only natural parity neutrons, QI.