Abstract
A very exciting development in experimental and theoretical nuclear physics has been the discovery and the description of new giant resonances. The most thoroughly studied one is located at an excitation energy of ~ 63 A-1/3 MeV and has been identified as an isoscalar (T=O) giant quadrupole resonance (GQR). Its observation in many nuclei reveals that the GQR represents a general behaviour of nuclei like the giant dipole resonance (GDR) known for many years 1. Recently there have also been reports of further giant resonances like the isovector GQR and giant E3 resonances. In particular the isoscalar giant monopole resonance (GMR) has been attracting the interest of many physicists. Although the experimental evidence for GMR has probably only very recently been established2, it has been for many years a playground for theorists predominantly due to its symmetry and to its relation to the nuclear compression modulus, a quantity being intimately related to the properties of nuclear interaction, and linked to experimentally easily accessible properties like nuclear isotope shifts.
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