HIGHLY EXCITED NUCLEAR-MOLECULES - A WAY TO EXPLAIN THE FLUCTUATIONS IN DBHIC EXCITATION-FUNCTIONS - STUDY OF THE SI-28-28 COLLIDING SYSTEMAT 5.3 MEV-CENTER-DOT-A(SI)

The properties of the strong fluctuations observed in the excitation f unctions of Dissipative Binary Heavy Ion Collisions (DBHIC) have been studied for the system Si-28+Si-28 in the energy range 150 MeV less th an or equal to E(lab) less than or equal to 156 MeV with 150 keV step laboratory incident energy, by angular distributions and excitation fu nctions measurements. Experimental results are compared to the the rec ently developed Partially Overlapping Molecular Level Model (POMLM). T he parameters of the model have been determined with reasonable accura cy by describing all the quantities characterizing the fluctuations in the excitation functions i.e.: Average Angular Distributions, Energy Autocorrelation Functions, Variances, Angular Correlation Coefficients . The results of the analysis; strongly support the idea of a process proceeding through the formation of an highly excited ''nuclear molecu le'', Experimental data collected at the most forward angles show the effects of strong excitation of a few final channels.