Abstract
The changes in the nuclear structure of Sm146154 isotopes have been studied in the dynamic pairing-plus-quadrupole model. The overall variation in the energy of levels of g-, β-, and γ-vibrational bands; shape parameters; absolute B(E2) values; E0 moments; and E2 branching ratios is given correctly. The effect of the change in the nature of the 22 (23) state at N86 on various transition moments is discussed. Increased asymmetry in lighter Sm isotopes is placed in the proper perspective. Comparison is made with other nuclear models.

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