Measurement of light charged particles in the decay channels of medium-mass excited compound nuclei

The 48Ti on 40Ca reactions have been studied at 300 and 600 MeV focusing
on the fusion-evaporation (FE) and fusion-fission (FF) exit channels. Energy spectra and
multiplicities of the emitted light charged particles have been compared to Monte Carlo
simulations based on the statistical model.
Indeed, in this mass region (A ~ 100) models predict that shape transitions can occur at
high spin values and relatively scarce data exist in the literature about coincidence measurements
between evaporation residues and light charged particles. Signals of shape
transitions can be found in the variations of the lineshape of high energy gamma rays
emitted from the de-excitation of GDR states gated on different region of angular momenta.
For this purpose it is important to keep under control the FE and FF processes,
to regulate the statistical model parameters and to control the onset of possible preequilibrium
emissions from 300 to 600 MeV bombarding energy.