Study and Determination of Cross-sections Of the Interaction of Protons of Variable Energy in Terms of Angle With Liver Tissue Using The Code MCNP

Abstract

In this research, the changes of cross section vs. angle was studied for different energies protons [50 to 231 MeV]in case of liver equivalent tissue using MCNP code, then we calculated the dose as a function of the cross-section at 231 MeV in terms of the different angles(-90……+90) and calculated the dose as a function of the cross-section at angle 0 in terms of different energies.

Results: from study we found that the minimum value was at 0 angle , which about , and the maximum value was at two sides (-80 , +80),  which about ,In addition we found that the maximum dose value at 231 MeV was at the angle 0 and the maximum dose value at angle 0 was at 50 MeV of protons .