Study of nuclear structure for the isotopes Yb ( A = 174, 176, 178) using the model of IBM–1

Abstract

The nuclear structure of the isotopes Yb ( A = 174, 176 , 178 )are studied using the model IBM -1. The energy levels, the ratio of energy and the energy groups are calculated using the program IBS1.FOR.We determine the behavior of these isotopes depends on the calculate of the ratio of experimental and theory energy for the low energy levels of positive parity shows that the isotopes belong to the rotational dynamical symmetry SU(3) .The number of neutrons for the isotope174Yb is in mid-shell between two magic numbers (82,126) then, that’s led to appear the energy groups and the energy levels are arrived approximately of 3.5 Mev . The present results give a good agreement with the experimental values.