Effect of free and in-medium proton-nucleon total cross sections on p-12 C total cross section

الملخص EN

In the framework of optical limit of Glauber multiple scattering model, the total cross section for proton scattering on 12C nucleus is calculated in the energy range 30 ≤ Ep ≤ 1000 MeV.

The effect of different experimental data and phenomenological forms of free and in – medium proton – nucleon total cross sections are studied.

In addition, the slope parameter of proton – nucleon elastic scattering amplitude is modified according to free and in –medium proton – nucleon total cross section up to 200 MeV.

Both relativistic mean field (RMF) and extended relativistic mean field (E-RMF) densities are used to describe the matter density of the target nucleus.

The in – medium corrections reduce the values of proton – nucleon total cross section, which in turn reduce the proton – nucleus total cross section.

It is found that the use of free- space scattering amplitude (ρ = ρο = 0) provide results seems to be acceptable in comparison with the available experimental data.