Bulg. J. Phys. vol.17 no.4 (1990), pp. 289-300


Isoscalar aAnd Isovector Giant Monopoli: Resonances in a Width Range of Nuclei

M. Oulne, M.V. Stoitsov, S.S. Dimitrova
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria
Abstract. Isoscalar and isovector giant monopole resonances are investigated in a width range of spherical even-even nuclei up to hypothetical superheavy nuclei with mass number A ≤ 500. Calculated excitation energies are compared with recent experimental data. Their mass- and isospin-dependence is analyzed as well as contributions coming from volume and surface local density vibrations. A strong sensitivity of isovector energy weighted sum rules is established to the neutron excess in nuclei.

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