HIGH ENERGY PROTON Scatterm• g from 12C and 160

Abstract

The elastic and inelastic scattering differential cross sections (for P+'2 Cand P+ 160 at different energies) are analyzed, using the nonrelativistic and relativistic approaches. In the nonrelativistic approach, the Gaussian and Love&Franey N-N t-matrix amplitudes are used, but in the relativistic approaches, the Gaussian t-matrix amplitude only is used. For these approaches, four sets of densities were used into the single folding optical potential (Gaussian, Brink, Harmonic-oscillator and Three parameters Fermi nuclear density distributions).

The relativistic kinematic effects in the nonrelativistic approach, are used in P+ 12C at different energies. and for P+160 at 500 Mev, using the Gaussian and Love&Franey N-N t-matrix amplitudes in• the elastic scattering differential cross section, to show the importance of these effects on• the• nonrelativistic calculations.

Several cases were derived for spherical and deformed optical potentials, to calculate the elastic and inelastic differential cross sections for L=O+, 2+ and 4+, using coupled channels CHUCK3 program. From these calculations, the coupling effect were studied, to show the importance of this effect on the elastic scattering calculations.

By comparing results of these calculations, with the experimental data, satisfactory agreement has been obtained, and showed that the folding optical potential provides a good interpretation of the elastic and inelastic scattering data. The following conclusions may be drawn.