ELASTIC-SCATTERING OF C-12 BY C-12 AT INTERMEDIATE ENERGIES

Using the double folding model (DF), the real part of the central opti cal potential for the C-12 + C-12 system is derived. This potential as well as the single-folding cluster model potential (SFC) are used to calculate the total and differential cross sections for C-12 elastical ly scattered on C-12 at three laboratory energies, E-lab. = 300, 344.5 and 360 MeV. The calculations are carried out with five sets of nucle on-nucleon (NN) interaction of the integrable Gaussian form and two se ts of parameters for the nuclear matter density of the harmonic oscill ator form. The transparency of the target nucleus is found to increase as the projectile energy increases. Good fits between the present cal culations and the experimental data, as well as with previous calculat ions, are obtained. The simple methods used here for calculating the r eal part of the optical potential reduce the potential computing time enormously. The suitable choice of NN interaction as well as nuclear m atter densities is important.