Including beta- and gamma- Vibrations in Evaluating the Ground State   Rotational Band of Deformed Even-Even Nuclei
  From the semi-empirical formalisms of Bohr-Mottelson, a new model, based on the effect of beta- and gamma- head energies and the variable moment of inertia, was developed to calculate the ground state rotational band of almost all deformed e-e nuclei. The model can be tuned for nuclei with experimentally available beta- and gamma-vibrational energies as well as for those with unmeasured beta- and gamma-vibrations. 
Mohamed E. Kelabi, A. Y. Ahmed, Vikram Singh