  Experiments investigating the fine structure of the IsoScalar Giant Monopole
Resonance (ISGMR) of 48Ca were carried out with a 200 MeV alpha
inelastic-scattering reaction, using the high energy-resolution capability and
the zero-degree setup at the K600 magnetic spectrometer of iThemba LABS, Cape
Town, South Africa. Considerable fine structure is observed in the energy
region of the ISGMR. Characteristic energy scales are extracted from the
experimental data by means of a wavelet analysis and compared with the
state-of-the-art theoretical calculations within a Skyrme-RPA (random phase
approximation) approach using the finite-rank separable approximation with the
inclusion of phonon-phonon coupling (PPC). Good agreement was observed between
the experimental data and the theoretical predictions.
