Back bending phenomena evaluation and energy band crossing of some deformed nuclei

Abstract

In the present work, the moment of inertia models(VMI,VAVM,GVMI)are used to study the nuclear structure of even-even nuclei ( 30 56 26Fe , 40 74 34 Se , 48 88 40Zr , 60 106 46Pd , 92 156 64Gd , 108 180 72Hf , 112 186 74W ). These nuclei are belong to a dynamical symmetry O(6), SU(5)-O(6)-SU(3), SU(5), O(6)-SU(5), SU(3)-SU(5), SU(3), SU(3)-O(6) respectively, throw the study energy band crossing (energy level as a function of angular momentum), and back bending phenomena (moment of inertia (2/ħ2 ) as a function of rotational energy squared (ћω)2 ). This study shows that the three moment of inertia models that are used here have no effect on the nuclear structure of the nucleus with the dynamical symmetry SU(3), but the nuclear structure of the other dynamical symmetries have been effected, because the back bending does appear in them .